ARM Options Are Pricing a $19 Move Into September 4 — Our Read Says the Drift Is Lower

The options market implies a $220.21–$258.61 range into the September 4 expiration; here's what's driving it and three defined-risk ways to trade the next six days.

Published Saturday, August 29, 2026 · Data as of the August 28 close · Export generated 2026-08-29 22:15 UTC

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Quick answer

Item	Answer
Market bias	Slightly bearish
Options-implied range (into Sept 4)	$220.21 – $258.61 (±8.0%)
Major support	$225 (the Sept 4 expiration's put wall)
Major resistance	$270 (the Sept 4 expiration's call wall)
Max pain (Sept 4)	$255
Dealer gamma regime (estimate)	Negative — hedging tends to amplify moves; a flip level could not be computed from today's chain
Volatility condition	Falling — IV rank 30/100 · premium thin: options are priced about 17 vol points below the movement ARM has actually delivered
Technical check	Confirms (bearish, 3-day and 6-day models)
Best-fitting strategy	Long put spread (defined risk, Sept 4 expiration)
Analysis invalidated if	ARM closes above $250

1 · What matters today

ARM closed Friday at $239.05, down from $255.21 the session before — a 6.3% drop that started with a 1.6% gap lower at the open. Our read of options flow comes out slightly bearish for the next six days, mostly because put activity exploded on the way down: for every call contract traded, 1.30 puts changed hands, against a 7-day average of 0.57. The options market is pricing a move of about ±$19.20 into the September 4 expiration — that's the move implied by what straddles cost — putting the rails at $220.21 and $258.61. The level that changes the picture is $250: a close back above it puts price into the heaviest gamma cluster on the chain and kills the downside lean. Two independent technical models, at 3 and 6 days, also read bearish, targeting $235.50 and $233.50.

2 · What the options market is pricing

What changed this week

Friday undid the week. Over five sessions the stock is only down 1.6%, but nearly all of that damage arrived in one session after a two-day pop to $254–$255. Implied volatility — the market's estimate of how much ARM will move, baked into option prices — kept sliding anyway: at-the-money IV fell 7.5% on the day, 10.1% over five sessions, and is down 45.7% over 30 sessions, now sitting at 60.0% versus a 30-day average of 84.4% and a 90-day average of 90.7%. Positioning went the other way. Put/call open interest — how many puts are held open for each call — sits at 1.21, against a 7-day average of 1.19, while volume flipped violently put-heavy at 1.30 (7-day average 0.57). That put-buying pace is unusually heavy even by ARM's own recent standards.

The new money is telling. Fresh downside strikes were opened in the September 4 expiration and immediately traded: the $220 puts went from nothing to 258 contracts open on 231 lots, the $215 puts to 194 open on 108 lots, and the $210 puts to 180 open on 306 lots. Further out, the November 20 $250 puts added 482 contracts, the largest single open-interest build on the board. (Into Friday's expiration, the settled August 28 $265 calls shed 1,864 contracts — history now, not a live level.) The multi-horizon trend read is worth one line: over the past week momentum is flat, but over roughly two months ARM is down 43%, and a momentum crossover on August 20 turned the near-term read back down. Near-term flow and the bigger trend now point the same way.

Expected move

Into September 4, the chain prices an 8.02% move — about $19.20 either side of $239.41, or $220.21 to $258.61. That is the one-standard-deviation move implied by at-the-money straddle pricing, not a promise.

Expiration	Implied move	Range around $239.41
Friday, Sept 4 (7 days)	±8.02%	$220.21 – $258.61
Friday, Sept 11 (14 days)	±11.31%	$212.33 – $266.49
Friday, Sept 18 (21 days)	±14.21%	$205.39 – $273.43
Friday, Sept 25 (28 days)	±16.61%	$199.64 – $279.18

The ladder steps up smoothly — 8.0%, 11.3%, 14.2%, 16.6% — with no sharp kink between rungs, which is what you'd expect when nothing scheduled sits between them. At-the-money IV barely moves across the curve (57.9% at seven days, 59.3% at 21 days), so the chain is pricing more time, not more event risk.

Volatility

At-the-money IV is 60.0% with an IV rank of 30/100 — today's reading is cheaper than 70% of the past year's, and the percentile measure (43) says the same thing more softly. Direction is unambiguously down across every window: −7.5% on the day, −10.1% over five sessions, −45.7% over thirty, and well under both the 30- and 90-day averages. The front-month read is unavailable today because Friday was an expiry day and the nearest contract had zero days left, so the usual comparison of option prices across expiration dates can't be interpolated. One "vs its own norm" observation stands out: ARM's 20-day realized volatility of 77.3% is low relative to this stock's own recent history — an absurd sentence for most names, and a reminder of how violent the last two months have been here. Shorter-window movement is cooler still, with 10-day realized vol at 55.2%.

Premium rich or cheap. The volatility risk premium — the gap between how much movement options are priced for and how much ARM has actually delivered — is −17.3 vol points: 60.0% implied against 77.3% delivered over the past month. When that gap is positive, option sellers have been collecting more than realized movement cost them; here it is deeply negative, and it has been negative every session since August 4, when it flipped from roughly +0.2 points. At the 48th percentile of this stock's own recent readings, today's gap is about mid-pack for a name that has spent a month paying option buyers. One mechanical caveat: the realized leg is still carrying early-August's outsized swings inside its 20-day window, so part of that "cheapness" is history, not opportunity. Even allowing for that, the combination — IV rank 30 and implied running below delivered — favors owning premium rather than collecting it this week.

Skew and sentiment

Skew is the observation that puts and calls the same distance from the stock price don't cost the same. Here it runs backwards from the usual crash-protection pattern: 25-delta puts are marked at 59.0% IV against 62.2% for 25-delta calls, so puts are 3.2 vol points cheaper than calls, versus a 60-day median gap of 1.3 points. Traders are still paying up for upside convexity in ARM, not for downside insurance — and that call-side richness is the one genuinely bullish ingredient in this week's read.

Everything else in the flow leans the other way. Put volume beat call volume 16,349 to 12,596 on total volume that was only 0.85× the 20-day average — a small tape with a heavy put tilt, and the put/call volume ratio itself sits well above its own recent norm. Sentiment in short-dated options is the sharpest signal on the board: the 0–7 day bucket scored −94, its most negative reading of the past month and a violent swing from a +16 seven-day average, driven entirely by call open interest draining while puts built. The 7–30 day bucket is mildly negative at −10, while the 30–60 day (+12) and 60–120 day (+21) buckets still lean positive. Our summary phrase for that shape is the file's own: aggressive front-end put demand against a longer-dated chain that hasn't given up.

The key levels map

Level	Price	Why it matters
Chain-wide heaviest call strike	$320	22,551 calls open across all expirations (mostly November) — the whole chain's call wall, far above this week's map
Swing resistance	$291.55	Prior pivot cluster from the price feed (heuristic level)
Call wall, Sept 4 expiration	$270	Biggest pile of open calls in the target expiration (479 contracts) — thin as walls go, but the top of the week's corridor
Swing resistance	$265.37	Prior pivot cluster (heuristic level)
20-day moving average	$261.20	Price sits 8.5% below it — the average is now overhead
Max pain, Sept 4	$255	Where the most option value would expire worthless; expirations sometimes gravitate toward it, and this one sits well above spot
Largest gamma strike (chain-wide)	$250	Heaviest gamma·open-interest concentration on the board; also the article's invalidation level
Swing resistance	$243.12	Prior pivot; the 6-day technical model puts its resistance at $244.75
Swing resistance / last close	$239.50 / $239.05	Price is sitting directly under a pivot shelf
Heavy gamma strike	$240	Second-largest gamma cluster; also the most-traded put line at the next expiration
Swing support	$233.29	First heuristic support shelf below spot
Heavy gamma strike	$230	8,404 puts open chain-wide; a natural short-strike magnet
Put wall, Sept 4 expiration	$225	Biggest pile of open puts in the target expiration (569 contracts) — the floor of the week's corridor
Lower expected-move rail	$220.21	One standard deviation down through Sept 4
Chain-wide put wall	$200	13,481 puts open across all expirations — the structural floor further out, not this week's
200-day moving average	$199.34	Price is still 19.9% above it; the multi-month uptrend structure is intact

Note the disagreement worth naming: the whole chain's walls sit at $320 and $200, both far away and dominated by November and December open interest. For the next six days, the levels that matter are the September 4 expiration's own — $270 above and $225 below.

Positioning and unusual flow

One rough estimate of dealer positioning puts the September 4 expiration in negative gamma, which under the standard assumption means market-maker hedging tends to amplify moves rather than cushion them — sell into weakness, buy into strength. The aggregate chain reads the same way. A gamma flip level, the price below which that amplification is estimated to kick in, could not be computed from Friday's chain, so we're leaving it out rather than inventing one. Treat all of this as an estimate built on an assumed dealer sign convention, not observed inventory.

Three non-expired flow items stand out. The September 4 $250 calls traded 462 contracts against 239 open — turnover of nearly 2× — and the $250 puts moved $525,600 of premium on 365 contracts, making that strike the busiest line in the target expiration on both sides. The September 4 $260 calls traded 338 lots against 187 open while open interest fell 148, which reads more like closing than fresh bullish conviction. And the September 18 $250 puts were the single biggest dollar line on the whole board at $1.12 million of premium on 570 contracts, with 4,656 already open — real money positioned below the market a few weeks out.

3 · Technical check (the 20%)

Both technical reports run bearish and both confirm the options read. The 3-day model targets $235.50 with a $231.50–$242.50 range; the 6-day model, which lands exactly on our September 4 checkpoint, targets $233.50 with a $226.00–$247.50 range. Both targets sit comfortably inside the options-implied $220.21–$258.61 corridor, so this is confirmation with a tighter, lower-centered path rather than an extension.

The two most decisive reads behind that: money-flow has been negative for six consecutive sessions (CMF −0.126, well past the distribution threshold), and the directional-movement lines have flipped — −DI at 28.8 now leads +DI at 26.8 — though trend strength itself is still weak with ADX at 18.6. That last number is the caveat: an early-stage downtrend inside a low-conviction tape leaves plenty of room for chop. Both reports also note price remains far above its 200-day average at $199.34, framing this as a pullback within a larger uptrend, not a reversal. The 6-day model's own invalidation is a reclaim of $244.75.

Model vs. Market: The options market implies $220.21–$258.61 into September 4; the 6-day technical model targets $233.50 inside a $226.00–$247.50 band. The market is pricing roughly twice the width the model expects — which is why the structures below are built with defined risk and near-the-money strikes rather than by chasing the tails.

Practically, the TA pulled our bearish spread's short strike down to the put wall rather than shading it toward the expected-move rail, and it kept every structure inside the six-day window rather than reaching for more time.

Full technical write-ups: 3-day report → · 6-day report →

4 · Three ways the next six days can go

If ARM pushes above the call wall ($270): that would require clearing $250 and $255 first, and the heaviest gamma on the entire chain sits at $250 — rallies tend to slow where dealers have the most to hedge. Above $270 the September 4 open interest thins out quickly, with no meaningful call concentration until the far-dated $280–$290 lines. Nothing in the current flow argues for this branch; it is the tail, not the base case.

If ARM drifts between the walls ($225–$270): this is the widest branch and the one max pain quietly argues for. The September 4 max-pain strike is $255, about 6.5% above Friday's close — so if expiring open interest exerts any pull at all this week, it pulls up, not down. That tension between a bearish flow read and an above-market max pain is exactly why this article's bias is "slightly," not "firmly."

If ARM breaks below the put wall ($225): the fresh $210/$215/$220 put strikes opened on Friday sit directly under that shelf, and one rough estimate has the September 4 expiration in negative dealer gamma — a regime in which hedging flows tend to amplify a decline rather than cushion it. The lower expected-move rail at $220.21 and the swing shelf at $219.39 are the first things in the way; below that there is very little September open interest until the chain-wide $200 put wall.

5 · Three defined-risk structures

Prices are end-of-day midpoints as of 2026-08-28. All structures are hypothetical. Verify live prices before trading — these will be stale by the open. No earnings report falls inside this window; ARM's next is scheduled for November 4, well beyond every expiration quoted here.

Because implied volatility is running below delivered movement, the debit structure leads this week and both credit structures carry a health warning.

If you lean bearish: long put spread (the featured structure)

• Trade: Buy the Sept 4 $240 put, sell the Sept 4 $225 put
• Debit: $5.64 · Max profit: $9.36 ($936 per spread) · Max loss: $5.64 ($564) · Break-even: $234.36
• Why it fits: You're buying premium that has been cheap relative to what ARM actually delivers (implied 60.0% vs 77.3% realized), the short strike sits exactly on the September 4 put wall at $225, and the break-even at $234.36 lands on the swing shelf at $233.29 and just above the 6-day model's $233.50 target. Both technical timeframes point the same direction.
• Makes sense only if: you accept that the max-pain strike at $255 sits above the market, so any expiration pull works against this trade.
• Invalidated if: ARM closes above $250.
• Managing it: take profits at roughly 60–70% of the spread's width if price tags $228–$230 early; a long vertical this close to expiration loses value fast if the move doesn't come, so exit by Wednesday, September 2 if ARM is still above $240. The short-term trend read is only a week old against a two-month downtrend — take money early rather than holding for the full width.
• Liquidity note: the $240 puts quoted 95¢ wide (about 12% of mid) and the $225 puts 26¢ wide. Both are wide enough to matter — work the order at the midpoint and don't pay the offer.
• Analyze this position →

If you expect the range to hold: iron condor

• Trade: Sell the Sept 4 $225 put / buy the $215 put, and sell the Sept 4 $260 call / buy the $270 call
• Credit: $2.41 · Max profit: $241 · Max loss: $759 · Break-evens: $222.59 and $262.41
• Why it fits: The short strikes are the expiration's own walls — $225 put wall below, $260 just under the $270 call wall above — and both break-evens sit outside the implied $220.21–$258.61 range on the upside and only $2.40 inside it on the downside. You collect if ARM does nothing for six days.
• Health warning: you're selling premium that hasn't been rich lately. Implied volatility has run about 17 vol points below realized movement for a month; every seller in that window has been paid less than the stock's actual swings cost.
• Makes sense only if: you believe Friday's 6% drop was the move and the next six days go quiet.
• Invalidated if: ARM closes outside $225–$260 at any point — at that stage the untested side is doing nothing for you.
• Managing it: close at ~50% of max credit; exit regardless by Wednesday, September 2. If either short strike is breached, close that side rather than hoping — negative dealer gamma is the wrong regime in which to hold a tested short option.
• Liquidity note: the $225 puts trade 26¢ wide and the $260 calls 23¢, but the wings are thin — the $215 puts 22¢ on a 89¢ mid and the $270 calls 29¢ on an 87¢ mid, roughly a quarter of their value. Expect slippage on all four legs; this is a mid-price-or-nothing order.
• Analyze this position →

If you lean bullish: short put spread

• Trade: Sell the Sept 4 $230 put, buy the Sept 4 $220 put
• Credit: $2.30 · Max profit: $230 · Max loss: $770 · Break-even: $227.70
• Why it fits: You collect a credit today and keep it if ARM holds above $230 into Friday. The short strike sits on the second-heaviest gamma cluster on the chain with the $225 put wall directly beneath it, and the honest bullish argument is the max-pain strike at $255 plus a skew that still prices calls 3.2 vol points richer than puts — traders here are paying for upside, not protection.
• Health warning: same as the condor — you're selling premium that has been cheaper than delivered movement all month, and you're doing it against the week's flow rather than with it.
• Makes sense only if: you read Friday's drop as a one-day flush into the lower band rather than the start of a leg, which is the technical models' 30–35% scenario.
• Invalidated if: ARM closes below $228.68 (the swing support just under the short strike).
• Managing it: close at ~50% of max credit; exit regardless by Wednesday, September 2. If ARM closes through $230, close rather than hope — max loss here is 3.3× the credit collected.
• Liquidity note: the $230 puts quoted 50¢ wide (about 13% of mid) and the $220 puts 19¢. Tradeable, but the round trip on the spread costs real money.
• Analyze this position →

If none of these: no trade

There's a clean case for standing aside. Six-day options on a name that just fell 6% in a session are gamma-heavy and theta-heavy at the same time: the debit spread needs the move quickly, and the credit structures pay poorly because premium is thin, not rich — this is the opposite of the setup that makes premium-selling attractive. Bid-ask spreads across the September 4 chain run 8–13% of mid on the liquid lines and worse on the wings, which eats a meaningful slice of every edge listed above. And the two strongest signals genuinely disagree: front-end flow is aggressively put-heavy while the max-pain strike sits 6.5% above the market. If you want exposure to this view with less friction, the September 11 or September 18 expirations give the thesis room to work with less decay per day — at the cost of a wider implied range to be right about.

6 · Quick FAQ

What is ARM's expected move this week? About ±$19.20 (±8.02%) into the September 4 expiration, or a $220.21–$258.61 range, per the options market's straddle pricing as of the August 28 close.

Is ARM expected to go up or down over the next six days? Options positioning as of August 28 leans slightly bearish — front-end put demand spiked while call open interest drained — but that's a read of what traders have already done, not a forecast. The actionable map is the $220.21–$258.61 range and the $225 / $270 levels.

Are ARM options expensive right now? IV rank 30/100 says option prices are lower than 70% of the past year's readings; on top of that, they're running about 17 vol points below the movement ARM has actually delivered over the past month — roughly mid-pack (48th percentile) among this stock's own recent readings, and negative every session since August 4. On balance that favors owning premium over selling it, with the caveat that the realized-vol comparison is still inflated by early-August's outsized swings.

Where is ARM's biggest options support and resistance? For the September 4 expiration, the put wall is $225 (569 contracts open) and the call wall is $270 (479 contracts). The whole chain's walls sit much further out at $200 and $320, dominated by November and December positioning.

What invalidates this week's read? A close above $250.

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Methodology & disclosures. Data: end-of-day options-chain snapshot for ARM, 2026-08-28, generated 2026-08-29T22:15:25Z. Prices shown are midpoints and will differ from live markets. Momentum/positioning scores and volatility-premium comparisons are descriptive measurements of past option flow and past price movement — not investment advice, signals, forecasts, or guarantees. Earnings dates are from the data provider's earnings feed as of 2026-08-29T22:15:25Z; report dates can change. All trade structures are hypothetical. Every structure shown has a defined maximum loss; you can lose the entire max-loss amount. Options involve substantial risk and are not suitable for all investors.