TMO
Thermo Fisher ScientificAs of 2026-10-30 15:40 ET, TMO net GEX is $699K per 1% move; TMO call wall is $710; put wall is $680.
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More TMO options data
The price and the session change are a point-in-time snapshot taken at the time shown. The gamma levels run on a different clock: they are computed 2026-10-31 03:42 ET from the open interest carried on the option chain at that time and are not intraday values. Dealer positioning is an assumption, not an observable: open interest shows that a contract exists, never which side a dealer holds. How dealer gamma is computed.
As of 2026-10-31 03:42 ET, SquawkFlow published TMO at $697.00 at the 4:00 PM ET close on 2026-10-30 (-1.72%), net dealer gamma of $699K, a call wall at 710, a put wall at 680 and a zero-gamma flip at 695. The gamma figures are computed 2026-10-31 03:42 ET from the open interest carried on the option chain at that time; dealer positioning is an assumption, not an observable. Source: SquawkFlow, https://squawkflow.com/ticker/TMO.
MARKET SNAPSHOT
| Call Wall | 710 |
| Put Wall | 680 |
| GEX Flip | 695 |
| Swing Line | 690 |
| Net GEX | $699K |
Cached snapshot as of 2026-10-31 03:42 ET, live streaming data in the terminal.
TMO DEALER GAMMA BY STRIKE
Part of the SquawkFlow GEX Calculator: gamma by strike for any US stock. Compare with SPX GEX.
Net gamma exposure at each strike near TMO's spot price, signed from the dealer perspective, calls positive, puts negative. Green strikes are where hedging tends to dampen moves; red is where it tends to amplify them. Dealer positioning is an assumption rather than an observable, so treat these as a map of where hedging pressure concentrates, not a forecast.
Unit: USD of dealer gamma per 1 percent move in spot. A window of the TMO option chain, not the whole book: the 30 strikes nearest spot out of 105 seen, 418 contract rows spanning 2 expirations. Gamma is taken as the chain publishes it per contract; nothing here is re-priced. Crossed with the open interest carried on that chain. These rows came from the last chain saved to disk, not from a fresh provider response, so the vintage is older than the calculation time.
New to these levels? Start with the call wall and put wall, or the zero gamma level where the sign of dealer hedging flips.
All captured expirations. Chain as of .
| Strike | Net GEX | Call GEX | Put GEX | Concentration |
|---|---|---|---|---|
| 732.5 | $0 | $0 | $0 | |
| 730 | $69.0K | $69.0K | $0 | |
| 727.5 | $3.5K | $3.5K | $0 | |
| 725 | $24.4K | $24.4K | $0 | |
| 722.5 | $3.8K | $3.8K | $0 | |
| 720 | $134.3K | $177.9K | -$43.6K | |
| 717.5 | $9.6K | $9.6K | $0 | |
| 715 | $58.0K | $58.0K | $0 | |
| 712.5 | $0 | $0 | $0 | |
| 710CALL WALL | $840.7K | $845.1K | -$4.3K | |
| 707.5 | -$61.8K | $9.9K | -$71.7K | |
| 705 | $33.7K | $45.2K | -$11.5K | |
| 702.5 | $79.2K | $79.2K | $0 | |
| 700 | $207.7K | $246.1K | -$38.4K | |
| 697.5 | $0 | $0 | $0 | |
| 695SPOTGEX FLIP | $11.7K | $11.7K | $0 | |
| 692.5 | -$23.2K | $0 | -$23.2K | |
| 690 | $64.4K | $222.3K | -$157.9K | |
| 687.5 | $0 | $0 | $0 | |
| 685 | -$97 | $10.7K | -$10.8K | |
| 682.5 | -$5.3K | $5.2K | -$10.4K | |
| 680PUT WALL | -$154.9K | $45.7K | -$200.6K | |
| 677.5 | $80.5K | $80.5K | $0 | |
| 675 | -$108.5K | $9.1K | -$117.6K | |
| 672.5 | -$4.3K | $0 | -$4.3K | |
| 670 | -$164.7K | $27.3K | -$191.9K | |
| 667.5 | -$110.7K | $0 | -$110.7K | |
| 665 | -$10.3K | $0 | -$10.3K | |
| 662.5 | -$130.0K | $0 | -$130.0K | |
| 660 | -$148.1K | $5.8K | -$153.9K |
These levels were captured October 31, 2026 from the open interest carried on the option chain. New levels post before each market open. Today's SPX gamma levels.
COMMON QUESTIONS
- What was the last TMO price on this page?
- TMO close, Oct 30: $697.00 (-1.72%), as of 2026-10-31 03:42 ET.
- What are the TMO call wall and put wall?
- As of 2026-10-31 03:42 ET, the TMO call wall was at 710 and the put wall at 680, computed 2026-10-31 03:42 ET from the open interest carried on the option chain at that time.
- What is TMO net dealer gamma?
- As of 2026-10-31 03:42 ET, net dealer gamma for TMO was $699K, Positive gamma. Dealer positioning is an assumption, not an observable.
- Where is the TMO gamma flip?
- As of 2026-10-31 03:42 ET, the TMO zero-gamma flip was at 695, computed 2026-10-31 03:42 ET from the open interest carried on the option chain at that time.
- How often do these TMO figures change?
- The price is a snapshot taken at the time shown. The gamma levels come from open interest that settles once per trading day, and the page refreshes at most once an hour.
ABOUT TMO
Thermo Fisher Scientific provides analytical instruments, reagents, consumables, software, and diagnostics for life sciences customers. Its brands include Fisher Scientific, Applied Biosystems, and Patheon.
WHY TRACK TMO ON SQUAWKFLOW
TMO options flow serves as a proxy for biopharma R&D spending trends. Unusual activity often precedes shifts in life sciences capex cycles and can signal M&A in the tools space.
TMO IN 13F FILINGS
2 of the 8 managers in SquawkFlow's 13F cohort with a filing on record reported shares of TMO (filed as THERMO FISHER SCIENTIFIC INC, class COM) in their most recent Form 13F filing (newest: 2026-Q2, filed August 14, 2026). A 13F is filed up to 45 days after the quarter ends, so it is a dated snapshot, not a trade record.
- Viking Global Investors LP reported 1,937,415 shares ($971M) at the end of 2026-Q2, filed August 14, 2026. 2026-Q2 filing
- Bridgewater Associates LP reported 12,948 shares ($6.5M) at the end of 2026-Q2, filed August 14, 2026. 2026-Q2 filing
Form 13F reports long positions in 13(f) securities held on the last day of the quarter. It excludes short positions, cash, and assets outside 13(f) scope. An absent security is not evidence of a sale. Matched on the issuer name and share class as filed. The cohort is a named set of managers, not every 13F filer. All cohort managers
TMO DATA ON SQUAWKFLOW
Options Flow
TMO options flow, unusual activity, and volume concentrations from the session chain
Latest Snapshot
Last TMO price, change, volume, and the current dealer-gamma regime
GEX Dashboard
TMO gamma exposure levels, call/put walls, and GEX flip
AI Narration
AI-powered analysis of TMO market microstructure in real time
News Sentiment
TMO news with AI sentiment scoring and impact analysis
Sector Context
Healthcare sector rotation and relative strength vs peers
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