Analyze chain-based call/put positioning, unusual activity, key strike walls, and max pain for any stock — pick any expiration date.
Pick a single expiration or scan the nearest 4
Powered by Alpaca chain snapshot·Positioning, not live exchange tape
Scanning options flow…
Fetching chains across 4 expirations — may take a few seconds
Live Demo
Showing live options flow for SPY
This is real data — enter any ticker above to scan your own stock.
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Observation Strength—
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A rule-based summary of imbalance, activity size, quote width, and data coverage. It is not a probability or recommendation and does not confirm buy/sell, open/close direction, or trader intent.
Data Quality—
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Snapshot quality. Capped because chain data cannot confirm true tape direction.
📗 Call Wall
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Strike with the highest call open interest. This is a potential positioning and hedging reference, not guaranteed resistance.
⚖ Max Pain
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Theoretical strike that minimizes total option-holder payout for this expiration. Use as a reference only; it is not a price prediction.
📕 Put Wall
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Strike with the highest put open interest. This is a potential positioning and hedging reference, not guaranteed support.
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Call/Put Activity Score
Call / Put Split
Calls —%VolumePuts —%
Expiration Breakdown
PER EXPIRY
Top Strikes — Volume & Open Interest
STRIKE HEAT
Why this score?
CONTEXT
Unusual Activity
VOL/OI ≥ 2×CHAIN-BASED
ℹ Unusual = volume ≥ 50 contracts, Vol/OI ≥ 2×, and estimated premium ≥ $10K. This rule-based flag is not proof of price direction, buy/sell side, open/close status, or trader intent.
Top Contracts by Volume
FLOW
ℹ Data from Alpaca option chains — reflects snapshot at scan time, not live exchange tape.
RESEARCH_PRO
Full options flow
The SPY preview summarizes call/put activity; it does not establish trade direction. Research Pro adds more expirations, custom symbols, and expanded contract details.
This scanner summarizes an options-chain snapshot using call/put volume, open interest, quotes, and estimated premium. Chain data does not identify the trader, prove whether a contract was bought or sold, distinguish opening from closing activity, or establish directional intent. Unusual activity is an observation, not proof of a future move.
What Are Call Wall & Put Wall?
Call Wall and Put Wall identify the strikes with the highest call and put open interest in the selected snapshot. They are rule-based positioning references. Open interest alone does not reveal dealer inventory, hedging behavior, support, resistance, or future price movement.
What is Max Pain?
Max Pain is a theoretical calculation of the strike that minimizes aggregate option-holder payout at expiration under the model. It does not show where the market “wants” to settle and is not a price forecast or guaranteed outcome.
How to Read the Activity Score
The Call/Put Activity Score (0–100) is a weighted average of call shares of contract volume (35%), estimated premium (30%), near-spot estimated premium (20%), and unusual-contract estimated premium (15%). Components with no data are omitted and the remaining weights are normalized; if none are available, the score is a neutral 50. The score is rounded to one decimal before labeling: CALL HEAVY at 58.0 or above, PUT HEAVY at 42.0 or below, and BALANCED otherwise. There is no independent directional Flow Score. Calls and puts in a chain snapshot do not reveal whether trades were bought or sold, opened or closed, or intended as directional bets. Compare the score with the raw tables; it is not a trading signal.
Publisher, sources & limitations — September 15, 2026.
Published by StrongBuyAnalytics for educational use. Data reflects provider chain snapshots rather than a live exchange tape and may be delayed, cached, incomplete, or unavailable during provider, market, or service outages. Scores and labels are observations, not recommendations or probabilities.