NYSE Arca: SPY
SPY Put Signals
Latest SPY put signals for State Street SPDR S&P 500 ETF Trust.
Browse live SPY put signals with detection times, strike prices, expirations, and underlying-price context. SPY put option signals are timestamped when Astronomer's model flags unusual put activity and retained in the public history so you can review what happened after detection.
- Total signals
- 78
- Calls
- 60
- Puts
- 18
- Latest signal
- Oct 22, 2026
This archive organizes timestamped SPY put signals for State Street SPDR S&P 500 ETF Trust for educational review. Astronomer has published 18 SPY put signals based on unusual intraday options activity. These educational records are part of 78 total SPY signals tracked since December 2025, alongside 60 call signals.
The fund is designed to track the price and yield performance of the S&P 500 Index before expenses. Profile information is sourced from the fund sponsor and is included only to identify the security underlying this SPY signal archive. Astronomer is not affiliated with or endorsed by State Street SPDR S&P 500 ETF Trust. Official fund page
Reading a signal
How to read these SPY put signals
Each SPY put signal is a timestamped algorithmic detection of unusual SPY put-option activity. Read it together with its strike, expiration, detection time, and what SPY did afterward. A put signal records which side of the options tape moved; it is not a recommendation to buy or sell puts.
What each SPY put signal includes
- Direction
- Always put here. The SPY archive also keeps call signals separately.
- Strike and expiration
- The exact contract that was flagged. Many SPY signals are same-day, 0DTE contracts.
- Detection time
- US Eastern, to the minute, fixed when the signal fires and never edited afterward.
- SPY price at detection
- The one-minute bar open at that minute. Every outcome in the archive is measured from it.
- Observed movement
- Where SPY went between detection and the recorded close, plus the intraday peak in the signal's direction. Underlying price only, never option profit and loss.
SPY puts detected today
No SPY put signals have been detected so far today. The live window runs 9:30 AM to 3:00 PM ET on trading days. The most recent SPY put signal was a $764 put at 11:00 AM ET on October 22, 2026.
Most recent completed signal · rotates automatically
A recent SPY put signal, annotated: October 16, 2026 · SPY $773 put
- Detected
- October 16, 2026 at 10:49 AM ET
- Fixed the moment the model flagged the activity. Times are US Eastern and are never edited afterward.
- Direction
- Put
- Unusual put-option activity. Conventionally read as bearish, but the tape shows which side moved, not who bought or sold.
- Strike and expiration
- $773.00 put, expires same day
- The exact contract that was flagged. A same-day expiration is a 0DTE contract with very little time for a move to play out.
- SPY at detection
- $772.42
- The one-minute bar open at the detection minute. Every outcome below is measured from this price.
- SPY at recorded close
- $770.89, 13 minutes later
- The bar at the observation's suggested close, in the same session. Nothing in this archive is held overnight.
- Observed move
- +0.20% in the signal's direction
- Size of the underlying's move between those two prices. This is the price of SPY, not the price of the option.
- Peak move
- +0.20% at the intraday extreme
- The most favorable point reached before the recorded close. Capturing it would have required exiting at the exact extreme.
- Modeled return
- +21.8%
- The observed move times a fixed 110x directional proxy. Not measured profit and loss: it ignores premium paid, bid-ask spread, fills, time decay, and fees.
Every price above is the underlying, never an option quote. Past performance does not guarantee future results.
Archive
SPY put signal archive
For educational purposes only. Signals are observations of market activity — not financial advice or a recommendation to buy or sell any security. Options trading involves substantial risk, including the loss of principal. Do your own research.
This Month
Thursday, October 22, 2026
Friday, October 16, 2026
Thursday, October 1, 2026
September 2026
Monday, September 28, 2026
Thursday, September 10, 2026
Tuesday, September 8, 2026
August 2026
Thursday, August 20, 2026
July 2026
Friday, July 24, 2026
June 2026
Wednesday, June 17, 2026
April 2026
Monday, April 13, 2026
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Track record
Historical SPY put signal results
- Moved in the signal's direction
- 94.1%
- of 17 completed SPY put signals
- Average peak move
- 0.16%
- across 17 signals with intraday bar data
- Archive size
- 18
- SPY put signals since January 2026
Every figure measures the underlying's price between the detection minute and the recorded close in the same session, never overnight. None of it is option profit and loss: actual option returns depend on premium paid, bid-ask spread, fills, and fees that this archive does not model. The best result applies a fixed 110x leverage proxy and is the maximum in the archive, not a typical outcome. Signals without intraday bar data and implausible bad-data candles are excluded. Past performance does not guarantee future results. Read the full methodology.
Direction
What causes a SPY put signal
A SPY put signal fires when Astronomer's quantitative model detects a statistically significant shift in SPY put-option volume and flow during the live session. The detection is deterministic: it does not depend on news, a chart pattern, or an analyst's opinion, and the AI layer only summarizes what was already detected. Because the tape shows activity rather than intent, a put signal means unusual put activity occurred, not that whoever traded it was informed or correct.
For a field-by-field walkthrough, read how to read a SPY options trading signal.
Delivery
How to receive SPY put signals in real time
Signals publish the moment they are detected, during the live window of 9:30 AM to 3:00 PM ET, Monday through Friday, excluding exchange holidays. This public archive is the same record, published after the fact for anyone to audit.
Dashboard
Every signal as it fires, with the strike, expiration, detection time, and underlying price already attached.
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The same record delivered to your inbox the minute it is detected.
Consume the feed programmatically to drive your own tooling or a broker integration.
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Methodology
How these SPY signals are generated
- What a signal is
- A timestamped observation, not an instruction. A quantitative model watches SPY options activity in real time and records a signal when volume and flow change in a statistically significant way. An AI layer then summarizes and contextualizes the detection; it does not generate it.
- Data sources
- Consolidated U.S. options-market activity for SPY, evaluated alongside one-minute open/high/low/close bars for the underlying. Published signals preserve the contract, detection time, and underlying price observed at that moment.
- Timestamps
- Signal times are US Eastern (America/New_York) — the market's own clock — and are not converted to the visitor's local time zone. Underlying bars run from the 9:30 AM ET open to the 4:00 PM ET close.
- Update cadence
- Signals are published as they are detected, during the live window of 9:30 AM to 3:00 PM ET, Monday through Friday, excluding exchange holidays. This archive picks up new detections within about a minute; the aggregate statistics recompute daily.
- How outcomes are measured
- Entry is the one-minute bar at detection; exit is the bar at the observation's recorded close. Every figure is therefore intraday and same-session, never held overnight. All of it tracks the underlying's price movement, not option premiums and not profit and loss — actual option returns depend on quotes, fills, spread, and fees that this archive does not model.
- Known limits
- Signals with no matching intraday bar data are omitted from the statistics, and implausible moves are discarded as bad-data candles. Statistically significant activity describes what happened in the order book; it is not evidence that whoever traded it was informed or correct.
Read how Astronomer works for more on detection and the public archive.
Questions about SPY put signals
Astronomer has detected 18 SPY put signals since January 2026.
Across 17 completed SPY put signals since January 2026, the underlying moved in the signal's direction 94.1% of the time. Horizon is intraday and never overnight: entry is the one-minute bar at detection and exit is the bar at the observation's recorded close, both in the same trading session. The denominator counts only signals with both an entry and a close in that session — signals still open, signals with no intraday price data, and implausible bad-data candles are excluded. This measures the underlying's direction only. It is not option profit and loss, and it does not account for premium paid, bid-ask spread, slippage, or fees. Past performance does not guarantee future results.
Across 17 SPY put signals with intraday price data, the underlying moved an average of 0.16% in the signal's direction at its intraday peak. Peak means the most favorable point reached during the session, not the price at any exit — capturing it would require selling at the exact high. The single best observation in the archive is a modeled 33.9% from a put on January 30, 2026 — that is the maximum, not a typical result, and it is derived from the underlying's move using a fixed 110x leverage assumption rather than any option price that was actually quoted or filled. These figures are not measured option profit and loss. Actual option returns require option quotes or fills. Past performance does not guarantee future results.
See the Jan 30, 2026 put signal →SPY put signals had the most activity in January 2026, with 3 signals detected.
The most recent SPY put signal was detected on October 22, 2026.