Ticker data / GFL
GFL options activity and gamma
As of 2026-10-23T20:00:00.000Z, GFL has 499,273 standard-contract open interest across 8 expiries, 9.82% from the dated underlying price to the call wall. OI rank 2 of 113 measured books with the same UTC source date; not a full-market ranking.
GFL last, delayed: $45.53. As of . Source: delayed price. Clock basis: session close.
Gamma estimate by strike
| Strike | Net gamma estimate | Magnitude |
|---|---|---|
| 65 | $0 | |
| 60 | $17 | |
| 55 | $1,508,842 | |
| 54 | $0 | |
| 53 | $0 | |
| 52.5 | $1,709,094 | |
| 52 | $0 | |
| 51 | $0 | |
| 50 | $19,047,971 | |
| 49 | $115 | |
| 48 | $15,545 | |
| 47.5 | $2,129,463 | |
| 47 | $695 | |
| 46.5 | $690,354 | |
| 46 | $7,980 | |
| 45.5 | $2,245 | |
| 45 | $17,400,111 | |
| 44.5 | $123 | |
| 44 | $-5,823 | |
| 43.5 | $370 | |
| 43 | $-2,256 | |
| 42.5 | $-325,187 | |
| 42 | $-862 | |
| 41.5 | $0 | |
| 41 | $-12,079 | |
| 40.5 | $0 | |
| 40 | $-843,563 | |
| 39.5 | $-3,575 | |
| 39 | $-24,459 | |
| 38.5 | $0 | |
| 38 | $-365 | |
| 37.5 | $-362,198 | |
| 37 | $-45 | |
| 36 | $0 | |
| 35 | $-442,828 | |
| 34 | $0 | |
| 33 | $0 | |
| 32.5 | $0 | |
| 30 | $0 | |
| 27.5 | $0 |
Call wall: 50. Put wall: 40. This book clears the options activity floor.
Open interest: 499,273 contracts. Session volume: 0. Expiries held: 8. Source: delayed options data, chain as of 2026-10-23 20:00:00 UTC.
Method and data clocks
OI-derived gamma estimate, calls positive and puts negative; 100-share standard roots only; dollars per 1% underlying move. Not observed dealer positions. Full-chain activity; at most 40 nearest gamma strikes. Clock selection: session close. OI settlement date is not supplied by this feed; the chain clock does not establish a settlement date.
Company and sector context
GFL Environmental Inc. Subordinate voting shares, no par value. Utilities / Environmental Services. Catalogue checked 2026-10-20 from public issuer and exchange directories.
Sector peers
ADTN AEE AEP AM AQN AROC ATO AUDC Sector context
Historical measurements and modeled gamma describe the saved book. They do not predict price movement.