ARM Options Price a ±$26 Swing Into August 21 — The Chart Model Sees Half That

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The options market implies a $252.84–$304.44 range into the August 21 expiration; here's what's driving it and three defined-risk ways to trade it.

Published Saturday, August 15, 2026 · Data as of the August 14 close

Explore the live ARM options data in the Detailed Options Analyzer →

Quick answer

Item	Answer
Market bias	Bullish (a read of positioning, not a forecast)
Options-implied range (into Aug 21)	$252.84 – $304.44 (±9.3%)
Major support	$270 (secondary shelf at $250)
Major resistance	$300
Max pain (Aug 21)	$260
Dealer gamma regime (estimate)	Positive — hedging tends to dampen moves; flip level ≈ $170
Volatility condition	Falling — IV rank 40/100 · premium thin: options priced roughly 25 vol points below delivered movement (distorted by a gap still inside the realized-vol window)
Technical check	Confirms (bullish, 3-day and 6-day horizons)
Best-fitting strategy	Aug 21 $280/$290 call debit spread
Analysis invalidated if	ARM closes below $270

1 · What matters today

ARM closed at $279.44 on Thursday, and the options market is pricing a move of roughly $26 up or down through the August 21 expiration — a $252.84 to $304.44 band. That number comes from what at-the-money straddles cost, which is the market's own estimate of how far the stock travels in six days.

Our read of the flow leans bullish, and the clearest evidence is in the skew: calls the same distance out-of-the-money now cost about 6.3 volatility points more than the equivalent puts, against a 60-day norm of roughly flat. Traders are paying up for upside, not for crash protection. Call open interest is also building faster than put open interest at the Aug 21 expiration.

The one level that changes the picture is $270. Below it the positioning story stops working. Our technical check agrees with the direction but expects a much smaller move.

2 · What the options market is pricing

What changed this week

The dominant story is volatility collapse. At-the-money implied volatility — the market's estimate of how much ARM will move, baked into option prices — sits at 68.0%, down 7.3% on the day, 11.5% over five sessions, and 37.3% over the past month. It is now roughly 31% below its own 30-day average of 98.4%. IV rank has bled from a 14-day average of 61 to 40 today, so option prices have gone from expensive to middling in two weeks. This compression is running well above this stock's own recent norm for a single reading — it is the most extreme item in the entire positioning snapshot.

Positioning has quietly rotated toward calls. Put/call open interest — puts held open per call held open — sits at 0.87, versus a 14-day average of 1.02: put hedges have been unwound relative to calls. Put/call volume printed 0.62 against a 14-day average of 0.76. The biggest single build in open contracts anywhere in the live chain was the October 16 $270 put, up 1,938 contracts on $1.43 million of traded premium — one desk still buying longer-dated downside — but the Aug 21 expiration itself saw the $295 calls add 1,476 contracts and the $305 calls add 1,469. Into Friday's settled expiry, front-week call churn was heavy: the expiring $280 and $285 calls traded 2,665 and 2,233 contracts respectively as history, not as live positioning.

One tension worth holding: the short- and long-term trend reads point different ways. ARM is up 4.3% over the past month but still down 31.7% over roughly two months, and the price sits 10.2% below its 50-day moving average while sitting 4.8% above its 20-day. The near-term flow has turned constructive inside a bigger downtrend that hasn't been repaired.

Expected move

Into August 21, the options market prices a 1σ move of ±9.3%, or about ±$25.80 on a $278.64 chain-snapshot spot — the move implied by what straddles cost.

Expiration	Implied move	Range around $278.64
Aug 21 (6 days)	±9.3%	$252.84 – $304.44
Aug 28	±13.5%	$241.16 – $316.12
Sep 4	±16.8%	$231.91 – $325.37
Sep 18	±21.1%	$219.74 – $337.54

The ladder is remarkably smooth — each rung scales almost exactly with the square root of time, with at-the-money IV pinned between 66.8% and 69.9% from one week to five. There is no step-up anywhere in the curve, which is what a chain with no scheduled event inside the window looks like.

Volatility

IV rank is 40/100: today's implied volatility is cheaper than 60% of the past year's readings, though the percentile measure (61) says today sits above 61% of individual days — the two disagree because the past year contained a few enormous spikes that stretch the range. The front-month read is unavailable today (Thursday's snapshot carried a same-day expiration, so that tenor can't be interpolated), which also means no term-structure comparison across dates this week.

The more interesting reading is how much ARM has actually been moving. Twenty-day realized volatility is 92.6% — a huge number in absolute terms, yet slightly below this stock's own recent norm, which tells you what kind of name this is. The five-day versus twenty-day realized ratio has fallen to 0.51, unusually depressed against its own history: the past week has been roughly half as jumpy as the month behind it.

Premium: thin, but for a mechanical reason. The volatility risk premium — the gap between how much movement options are priced for and how much ARM has actually delivered — sits at roughly 25 vol points negative, and that reading is thinner than about three-quarters of this stock's own recent readings (26th percentile). On the surface that says option buyers are getting a bargain. Be careful: the series flipped from about +19 vol points on July 29 to negative within a session and has stayed there, and that flip is mechanical — a large earnings gap on July 29 entered the 20-day realized-volatility window and inflated the realized leg. Some of that "cheapness" is arithmetic, not opportunity. The honest verdict for this week: IV rank 40 with realized volatility decaying fast means neither side of the premium trade has a clean edge, which argues for defined-risk structures where you are paying or collecting a known, bounded amount rather than betting the volatility level itself.

Skew and sentiment

The 25-delta skew — how much pricier puts are than calls the same distance from the stock — reads −6.3 vol points against a 60-day median of −0.6. Negative means the relationship is inverted: 25-delta call IV is 72.7% while 25-delta put IV is 66.5%. Traders are paying a premium for upside exposure, not downside protection, and they are doing it more aggressively than this name's own recent history. That reading is the single strongest bullish input in our composite, and skew has flattened a further 1.3 points over the past five sessions.

Sentiment in short-dated options is split. The 0–7 day bucket reads slightly negative (−8) on modest put open-interest building, while the 7–30 day bucket reads a firm +50, driven by risk reversals showing calls 7.4 vol points richer than their 51-day baseline and call open interest adding 4,321 contracts against 340 for puts. The 30–60 day bucket reads +46. Against a seven-day baseline in which every bucket leaned bullish, today's front-end wobble looks like near-dated hedging into a still-constructive medium-term book. One counterweight: among contracts clearing the peer-relative unusual-volume bar, six were puts against four calls — put-side sweeps still slightly outnumber call-side ones.

The key levels map

Level	Price	Why it matters
Aug 21 nominal call wall	$400	7,698 calls held open, but 43% above spot — a legacy strike, not a live magnet
50-day moving average	$311.30	The close sits 10.2% below it; the two-month downtrend still owns this level
Second-heaviest gamma strike	$310	1,073 Aug 21 calls; first real shelf above the round number
Options-implied ceiling	$304.44	Top of the 1σ range into Aug 21
Call wall	$300	22,362 calls chain-wide and 6,485 for Aug 21 — the single biggest pile of open call contracts and the chain's largest gamma cluster; these often act as barriers
Swing resistance	$292.23	Recent pivot cluster from the price-structure read
Technical resistance	$288.33	Upper Bollinger band; rejected twice in August (technical model)
Spot / official close	$278.64 / $279.44	Chain-snapshot price and daily-feed close; the few cents' gap is a normal timing artifact
Technical support	$274.00	Flag low and moving-average confluence (technical model)
Gamma and OI shelf	$270	1,558 Aug 21 puts and the heaviest near-money gamma of any strike — primary support and the invalidation line
20-day moving average	$266.66	Close sits 4.8% above it
Swing support	$265.37	Nearest structural pivot below spot
Max pain (Aug 21)	$260	The price where the most option value expires worthless; expirations sometimes gravitate toward it
Options-implied floor	$252.84	Bottom of the 1σ range into Aug 21
Heaviest near-money put strike	$250	2,151 Aug 21 puts — the secondary support shelf
Whole-chain put wall	$200	9,318 puts across all expirations; a deep hedge zone, not a weekly level
Gamma flip estimate	≈ $170	One rough estimate; spot sits about 39% above it

A note on the walls: the Aug 21 expiration's own biggest strikes are $400 on the call side and $170 on the put side, both far-out legacy positions. The whole chain's heaviest call strike is $300 and its heaviest put strike is $200. For this week, treat $300 as the practical ceiling — it carries 6,485 Aug 21 calls on its own — and $270/$250 as the practical floor.

Positioning and unusual flow

One rough estimate of dealer positioning puts the chain in a positive gamma regime — market makers hedge the options they've sold, and in this regime their hedging tends to dampen moves rather than amplify them. That holds both for the chain as a whole and for the Aug 21 expiration on its own, so there's no disagreement to reconcile this week. The estimated flip level sits far below at roughly $170, and spot is unusually far above it even by this stock's standards. Treat all of that as an estimate built on an assumed dealer convention, not observed inventory.

Three live flow items stand out. The Aug 21 $272.50 puts traded 405 contracts against 101 open — four times turnover, top of their peer group, and roughly $299,000 of premium: someone buying near-the-money protection right into the expiration we care about. The Nov 20 $240 puts printed the largest dollar premium in the file at about $2.16 million on 999 contracts, a longer-dated downside hedge that says nothing about six-day direction. On the other side, the Oct 16 $290 calls traded 513 contracts for roughly $1.47 million — upside being bought further out. The near-dated tape is bullish; the far-dated tape is buying insurance.

3 · Technical check

Both technical horizons come back bullish and both confirm the options read. The 3-day model targets $282.50 by August 18 inside a $272.50–$287.50 band; the 6-day model targets $284.00 by August 21 inside $270.50–$290.50. Both targets sit comfortably inside the options-implied range, which is the definition of confirmation rather than extension.

The supporting evidence is a Chaikin Money Flow reading of +0.135 — well above the accumulation threshold and rising from negative a week ago — paired with a directional-index picture in which bulls still lead but trend strength has faded to 21, below the 25 that marks a real trend. The chart reads as a bull flag: a sharp recovery off the July lows, then two weeks of tight consolidation between roughly $270 and $290 with the bands narrowing. The caution flag is a fresh bearish MACD crossover, which argues the thrust is losing steam even though price hasn't broken.

The most useful number the technicals contribute is the invalidation: the 6-day model kills its own bullish case on a close below $270 — the same level the options chain marks as its gamma and open-interest shelf. Two independent reads landing on one number is why $270 is this article's kill switch, and why the bullish structure below uses strikes just above the money rather than reaching for the $300 wall.

Model vs. Market: The options market implies $252.84–$304.44 into August 21; the 6-day technical model targets $284.00 inside a $270.50–$290.50 band. The chart model expects roughly 40% of the range the options market is pricing — if that gap resolves the chart model's way, the premium sellers get paid and every long-premium position bleeds.

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 ($300): that strike holds 6,485 Aug 21 calls and the largest gamma pile in the chain, and the heaviest call open interest overhead tends to slow rallies as dealers hedge into strength. A clean break through leaves comparatively thin positioning until $310, with the top of the implied range at $304.44 sitting in between. This branch requires roughly a 7.5% move in six days — inside the priced range, but only just.

If ARM drifts between the shelves: the pin case, and the one the technical model favors. Max pain for Aug 21 sits at $260, well below spot, so expiring open interest is not pulling price up toward the current level — if anything it argues for drift lower into settlement. With hedging estimated to be in dampening mode and realized movement running at half its monthly pace, a $270–$292 chop is the path of least resistance.

If ARM breaks below the shelf ($270): below that level the near-money put open interest thins until $260 and then $250, where 2,151 Aug 21 puts sit right at the bottom of the implied range. The dampening estimate does not evaporate — spot would still be far above the estimated flip level near $170 — so this reads as an orderly slide toward max pain rather than an air pocket. It also kills the bullish thesis outright.

5 · Three defined-risk structures

Prices are end-of-day midpoints as of August 14. All structures are hypothetical. Verify live prices before trading — these will be stale by the open.

If you lean bullish: Aug 21 $280/$290 call debit spread

• Trade: Buy the Aug 21 $280 call, sell the Aug 21 $290 call
• Debit: $3.88 · Max profit: $6.13 · Max loss: $3.88 · Break-even: $283.88
• Why it fits: You pay a known amount to bet on a move up, and the premium you're paying has not been rich lately — implied volatility is 31% below its own 30-day average and the gap versus delivered movement sits in the bottom quarter of this stock's recent readings. The $290 short strike stops well short of the $300 call wall, so you are not selling the level the chain will defend. Both technical horizons target $282–$284.
• Makes sense only if: you want direction with a capped ticket and accept that a flat six days loses most of the debit.
• Invalidated if: ARM closes below $270.
• Managing it: take profit at roughly 60–70% of maximum value rather than holding for the last few cents into a Friday expiration; the short-term trend is fighting a two-month downtrend, which argues for taking money early. Cut it if $274 breaks intraday and doesn't reclaim.
• Liquidity note: the $280 calls quote 65¢ wide on a $10.18 mark (about 6%) and the $290 calls just 20¢ wide on $6.30 (about 3%) — the $290 leg is one of the most actively traded contracts in the expiration. Fills should be workable at or near mid.
• Analyze this position →

If you expect the range to hold: Aug 21 $240/$250/$300/$310 iron condor

• Trade: Sell the $250 put, buy the $240 put, sell the $300 call, buy the $310 call — all Aug 21
• Credit: $2.24 · Max profit: $2.24 · Max loss: $7.77 · Break-evens: $247.77 and $302.24
• Why it fits: a credit structure collects premium up front and wins if the stock finishes between the short strikes. Both shorts sit essentially at the edges of the implied range — $250 is the heaviest near-money put strike and $300 is the call wall — and the dealer-gamma estimate points to hedging that dampens rather than amplifies moves. The technical model's $270.50–$290.50 expected band fits entirely inside these wings.
• Makes sense only if: you're comfortable risking $7.77 to make $2.24, and you accept the health warning: you're selling premium that hasn't been rich lately — implied volatility is already 37% off its month-ago level, so there is limited further crush to harvest.
• Invalidated if: ARM closes outside $250–$300, at which point one wing is in play.
• Managing it: close at roughly 50% of maximum credit; exit regardless by Thursday's close rather than carrying gamma risk into Friday settlement. If either short strike trades through, close rather than hope.
• Liquidity note: the $300 calls are the most liquid contract in the expiration at 20¢ wide (5% of mark) on 1,048 contracts traded; the wings are cheaper and proportionally sloppier — the $240 puts quote 20¢ wide on a 60¢ mark. In absolute terms these are pennies, but work the order rather than paying the ask on all four legs.
• Analyze this position →

If you lean bearish: Aug 21 $270/$255 put debit spread

• Trade: Buy the Aug 21 $270 put, sell the Aug 21 $255 put
• Debit: $4.01 · Max profit: $11.00 · Max loss: $4.01 · Break-even: $265.99
• Why it fits: this is the trade for the max-pain case. The $260 max-pain strike for Aug 21 sits well below spot, the price is still 10.2% under its 50-day moving average, and the two-month trend remains down 31.7%. Buying the $270 strike means you own the exact level whose break invalidates the bullish read — this is the direct hedge against everything above.
• Makes sense only if: you think the flag resolves down rather than up, or you already hold long exposure and want a six-day insurance policy.
• Invalidated if: ARM closes above $288 — the level the chart model marks as the flag's upper boundary.
• Managing it: this position pays fastest between $270 and $260; take profits into the max-pain zone rather than waiting for the full $255. Because it fights the near-term flow, size it small and give it no more than three sessions to work.
• Liquidity note: the $270 puts quote 40¢ wide on a $6.00 mark (about 7%) with 1,558 contracts open and 218 traded; the $255 puts are 23¢ wide on $2.00 (about 12%) — the short leg is the slippage risk, so leg it patiently or use a limit on the package.
• Analyze this position →

If none of these: no trade

There is a respectable case for standing aside this week. The premium picture is genuinely ambiguous: options look cheap against delivered movement, but that comparison is contaminated by a gap that is still sitting inside the realized-volatility window, and the past five sessions have been half as volatile as the past month. That combination means the buy-versus-sell-premium decision has no clean edge in either direction — you'd be paying for a move the stock has stopped making, or collecting for a range that a 68% implied volatility says can still be blown out by $26 in six days. Add a bullish near-term flow read sitting inside a downtrend that hasn't been repaired, and "wait for a close through $270 or $290 and trade the resolution" is a perfectly defensible plan.

6 · Quick FAQ

What is ARM's expected move this week? About ±$25.80 (±9.3%) into the August 21 expiration, giving a $252.84–$304.44 range, per the options market's straddle pricing as of the August 14 close.

Is ARM expected to go up or down over the next six days? Options positioning as of August 14 leans bullish — calls are running about 6.3 vol points richer than equivalent puts against a roughly flat norm, and call open interest is building faster than put open interest — but that's a read of what traders have done, not a forecast. The actionable map is the $252.84–$304.44 range and the $270 / $300 levels.

Are ARM options expensive right now? IV rank 40/100 says option prices are cheaper than 60% of the past year's readings; on top of that, they're running roughly 25 vol points below the movement ARM has actually delivered, thinner than about three-quarters of this stock's own recent readings. That looks like a bargain, but the realized side is inflated by a gap still inside the 20-day window — treat it as ambiguous, not as free edge.

Where is ARM's biggest options support and resistance? Resistance at $300 — 6,485 Aug 21 calls and the biggest gamma cluster in the chain. Support at $270, with 1,558 Aug 21 puts and the heaviest near-money gamma, and a deeper shelf at $250 (2,151 puts). Max pain for Aug 21 sits at $260.

What invalidates this week's read? A close below $270.

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Methodology & disclosures. Data: end-of-day options-chain snapshot for ARM, 2026-08-14, generated 2026-08-15T09:38:14.000Z. 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 and reported results are from the data provider's earnings feed as of 2026-08-15T09:38:14.000Z; 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.