# GFL options activity and gamma

Canonical: https://squawkflow.com/ticker/GFL

GFL Environmental Inc. Subordinate voting shares, no par value. Utilities. Catalogue checked 2026-10-20.

Last held price $45.53, as of 2026-10-23T20:00:00.000Z, delayed price.

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.

Source: delayed options data; quote 2026-10-23T20:00:00.000Z; chain 2026-10-23T20:00:00.000Z. 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.

Gamma by strike (40 rows, dollars per 1% move):

| Strike | Net gamma estimate |
| --- | --- |
| 65 | 0 |
| 60 | 17 |
| 55 | 1508842 |
| 54 | 0 |
| 53 | 0 |
| 52.5 | 1709094 |
| 52 | 0 |
| 51 | 0 |
| 50 | 19047971 |
| 49 | 115 |
| 48 | 15545 |
| 47.5 | 2129463 |
| 47 | 695 |
| 46.5 | 690354 |
| 46 | 7980 |
| 45.5 | 2245 |
| 45 | 17400111 |
| 44.5 | 123 |
| 44 | -5823 |
| 43.5 | 370 |
| 43 | -2256 |
| 42.5 | -325187 |
| 42 | -862 |
| 41.5 | 0 |
| 41 | -12079 |
| 40.5 | 0 |
| 40 | -843563 |
| 39.5 | -3575 |
| 39 | -24459 |
| 38.5 | 0 |
| 38 | -365 |
| 37.5 | -362198 |
| 37 | -45 |
| 36 | 0 |
| 35 | -442828 |
| 34 | 0 |
| 33 | 0 |
| 32.5 | 0 |
| 30 | 0 |
| 27.5 | 0 |

Sector peers: [ADTN](https://squawkflow.com/ticker/ADTN), [AEE](https://squawkflow.com/ticker/AEE), [AEP](https://squawkflow.com/ticker/AEP), [AM](https://squawkflow.com/ticker/AM), [AQN](https://squawkflow.com/ticker/AQN), [AROC](https://squawkflow.com/ticker/AROC), [ATO](https://squawkflow.com/ticker/ATO), [AUDC](https://squawkflow.com/ticker/AUDC)

[Sector context](https://squawkflow.com/sector-rotation)