GLW gamma levels history
From the closing options book · October 20, 2026 · updated after every close
GLW's closing gamma levels for 260 sessions to October 20, 2026: call wall, put wall, apex, gamma flip, net gamma and implied volatility. The full record back to the first recorded session is a free CSV download.
260
Sessions
34/60
Short gamma
last 60 sessions
152.5
Call wall
130
Put wall
GLW net gamma, last 60 sessions
GLW closing levels by session
Download CSV| Session | Close | Call wall | Put wall | Apex | Flip | Net gamma | IV |
|---|---|---|---|---|---|---|---|
| Oct 20 | 132.26 | 152.5 | 130 | 130 | — | −$9.3M | 69.1% |
| Oct 19 | 132.74 | 150 | 130 | 130 | — | −$9.9M | 74.4% |
| Oct 16 | 132.00 | 152.5 | 135 | 135 | — | −$8.2M | 61.0% |
| Oct 15 | 138.43 | 165 | 135 | 135 | — | −$20.3M | 76.4% |
| Oct 14 | 140.89 | 165 | 140 | 140 | — | −$16.9M | 70.6% |
| Oct 13 | 148.54 | 165 | 145 | 145 | — | −$9.4M | 66.7% |
| Oct 12 | 147.28 | 165 | 145 | 145 | — | −$9.8M | 61.1% |
| Oct 9 | 156.68 | 165 | 145 | 165 | 173.75 | +$2.0M | — |
| Oct 8 | 152.83 | 165 | 145 | 165 | — | −$6.0M | 58.1% |
| Oct 7 | 163.25 | 165 | 145 | 165 | 168.75 | +$11.1M | 55.4% |
| Oct 6 | 168.97 | 165 | 145 | 165 | 163.75 | +$15.1M | — |
| Oct 5 | 159.37 | 165 | 145 | 165 | 168.75 | +$6.0M | 58.0% |
| Oct 2 | 164.19 | 165 | 145 | 165 | 168.75 | +$7.0M | 56.2% |
| Oct 1 | 160.42 | 165 | 145 | 165 | 168.75 | +$7.9M | 57.4% |
| Sep 30 | 153.76 | 165 | 145 | 165 | — | −$3.0M | — |
| Sep 29 | 158.71 | 170 | 145 | 170 | 173.75 | +$3.0M | — |
| Sep 28 | 151.59 | 165 | 145 | 165 | — | −$1.5M | — |
| Sep 25 | 156.74 | 165 | 135 | 165 | 168.75 | +$3.2M | 54.8% |
| Sep 24 | 154.15 | 165 | 145 | 165 | — | −$1.1M | — |
| Sep 23 | 154.48 | 165 | 145 | 165 | 178.75 | +$917K | 57.1% |
| Sep 22 | 159.69 | 165 | 145 | 165 | 166.25 | +$7.0M | 60.6% |
| Sep 21 | 158.98 | 165 | 145 | 165 | 168.75 | +$4.8M | — |
| Sep 18 | 150.13 | 165 | 145 | 165 | — | −$373K | 55.9% |
| Sep 17 | 147.80 | 165 | 150 | 150 | — | −$23.9M | 54.8% |
| Sep 16 | 144.16 | 165 | 150 | 150 | — | −$19.8M | 69.7% |
| Sep 15 | 143.57 | 165 | 150 | 150 | — | −$17.2M | 66.1% |
| Sep 14 | 143.60 | 170 | 150 | 150 | — | −$18.8M | 68.6% |
| Sep 11 | 166.40 | 170 | 150 | 150 | 178.75 | +$4.1M | — |
| Sep 10 | 163.12 | 167.5 | 150 | 167.5 | 171.25 | +$10.8M | 68.6% |
| Sep 9 | 168.46 | 167.5 | 150 | 167.5 | 168.75 | +$17.7M | — |
| Sep 8 | 165.96 | 180 | 150 | 150 | 171.25 | +$8.1M | — |
| Sep 4 | 154.30 | 160 | 150 | 150 | — | −$6.7M | 56.4% |
| Sep 3 | 146.00 | 152.5 | 150 | 150 | — | −$10.7M | 54.0% |
| Sep 2 | 144.13 | 160 | 150 | 150 | — | −$17.0M | 57.0% |
| Sep 1 | 145.56 | 160 | 150 | 150 | — | −$14.6M | 57.3% |
| Aug 31 | 148.73 | 175 | 150 | 150 | — | −$12.5M | 55.5% |
| Aug 28 | 148.98 | 175 | 150 | 150 | — | −$10.5M | 54.8% |
| Aug 27 | 152.80 | 157.5 | 150 | 150 | — | −$3.3M | 60.3% |
| Aug 26 | 152.78 | 155 | 150 | 150 | — | −$4.1M | 62.8% |
| Aug 25 | 147.16 | 175 | 150 | 150 | — | −$12.3M | 62.9% |
| Aug 24 | 145.55 | 170 | 150 | 150 | — | −$13.3M | 61.7% |
| Aug 21 | 149.84 | 175 | 150 | 150 | — | −$10.2M | 60.9% |
| Aug 20 | 151.45 | 160 | 155 | 155 | — | −$14.4M | — |
| Aug 19 | 152.46 | 160 | 155 | 155 | — | −$11.3M | 67.0% |
| Aug 18 | 159.90 | 160 | 155 | 160 | — | −$704K | 68.9% |
| Aug 17 | 173.21 | 175 | 150 | 175 | 175 | +$11.7M | 72.0% |
| Aug 14 | 165.99 | 160 | 150 | 160 | 175 | +$4.7M | — |
| Aug 13 | 158.54 | 160 | 155 | 155 | 185 | +$775K | — |
| Aug 12 | 167.44 | 170 | 155 | 170 | 170 | +$10.8M | 73.4% |
| Aug 11 | 159.19 | 160 | 155 | 160 | 175 | +$2.2M | — |
| Aug 10 | 157.76 | 160 | 155 | 160 | 175 | +$1.9M | 76.6% |
| Aug 7 | 165.68 | 160 | 140 | 160 | 165 | +$5.2M | 71.7% |
| Aug 6 | 157.18 | 160 | 140 | 160 | 160 | +$6.3M | 78.7% |
| Aug 5 | 156.70 | 160 | 140 | 160 | 127 | +$6.2M | — |
| Aug 4 | 159.89 | 160 | 140 | 160 | 160 | +$6.2M | 85.8% |
| Aug 3 | 146.64 | 160 | 140 | 160 | 160 | +$1.4M | 87.3% |
| Jul 31 | 138.25 | 160 | 140 | 160 | — | −$696K | 81.7% |
| Jul 30 | 135.22 | 160 | 135 | 160 | — | −$696K | 84.8% |
| Jul 29 | 124.05 | 138 | 140 | 140 | — | −$6.1M | 117.9% |
| Jul 28 | 126.01 | 149 | 140 | 140 | — | −$8.1M | 113.7% |
| Jul 27 | 143.36 | 160 | 140 | 140 | — | −$5.5M | 103.8% |
| Jul 24 | 146.65 | 160 | 140 | 140 | — | −$5.0M | 99.6% |
| Jul 23 | 156.06 | 167.5 | 155 | 155 | — | −$10.5M | — |
| Jul 22 | 154.06 | 141 | 155 | 155 | — | −$8.6M | — |
| Jul 21 | 162.41 | 185 | 150 | 150 | — | −$4.8M | 104.9% |
| Jul 20 | 153.10 | 160 | 150 | 150 | — | −$8.2M | 117.1% |
| Jul 17 | 154.61 | 160 | 150 | 150 | — | −$7.9M | 99.0% |
| Jul 16 | 158.39 | 185 | 150 | 150 | — | −$18.5M | — |
| Jul 15 | 174.41 | 200 | 170 | 170 | — | −$18.4M | 98.0% |
| Jul 14 | 187.64 | 200 | 180 | 180 | — | −$8.8M | 97.2% |
| Jul 13 | 183.11 | 200 | 170 | 170 | — | −$11.0M | 99.6% |
| Jul 10 | 190.89 | 200 | 170 | 170 | — | −$5.7M | 90.5% |
| Jul 9 | 192.38 | 200 | 192.5 | 192.5 | — | −$10.2M | 92.5% |
| Jul 8 | 184.03 | 210 | 170 | 170 | — | −$13.3M | — |
| Jul 7 | 185.38 | 210 | 170 | 170 | — | −$11.8M | 97.7% |
| Jul 6 | 194.80 | 230 | 205 | 205 | — | −$7.0M | 96.6% |
| Jul 2 | 196.79 | 230 | 205 | 205 | — | −$6.1M | 95.4% |
| Jul 1 | 220.63 | 230 | 217.5 | 230 | 232.5 | +$5.0M | 88.3% |
| Jun 30 | 255.43 | 250 | 217.5 | 250 | 212.5 | +$26.0M | 93.0% |
| Jun 29 | 255.69 | 250 | — | 250 | — | +$24.1M | 95.5% |
| Jun 26 | 221.05 | 250 | 187.5 | 250 | 210 | +$16.2M | 83.2% |
| Jun 25 | 228.01 | 230 | 187.5 | 230 | 200 | +$35.0M | 102.6% |
| Jun 24 | 205.83 | 210 | 170 | 210 | 207.5 | +$14.0M | 91.7% |
| Jun 23 | 194.07 | 200 | 165 | 200 | 210 | +$6.1M | 87.6% |
| Jun 22 | 209.83 | 250 | 170 | 250 | 200 | +$12.2M | 86.8% |
| Jun 18 | 194.92 | 200 | 160 | 200 | 225 | +$216K | 75.5% |
| Jun 17 | 175.40 | 200 | 175 | 175 | — | −$10.0M | 72.2% |
| Jun 16 | 177.42 | 200 | 175 | 200 | — | −$4.7M | 73.2% |
| Jun 15 | 187.88 | 200 | 160 | 200 | 205 | +$3.2M | 76.6% |
| Jun 12 | 179.20 | 200 | 160 | 200 | — | −$3.0M | 77.0% |
| Jun 11 | 176.55 | 200 | 170 | 200 | — | −$3.5M | — |
| Jun 10 | 168.17 | 200 | 160 | 160 | — | −$9.7M | 86.6% |
| Jun 9 | 173.94 | 200 | 160 | 200 | — | −$5.9M | — |
| Jun 8 | 187.54 | 200 | 175 | 200 | 210 | +$3.6M | 84.8% |
| Jun 5 | 177.58 | 200 | 175 | 200 | — | −$4.1M | 83.6% |
| Jun 4 | 197.70 | 215 | 175 | 215 | 200 | +$17.6M | 80.0% |
| Jun 3 | 200.76 | 215 | 175 | 215 | 200 | +$19.8M | 83.2% |
| Jun 2 | 200.40 | 215 | 175 | 215 | 192.5 | +$13.6M | 84.6% |
| Jun 1 | 176.70 | 200 | 175 | 200 | — | −$3.3M | 76.8% |
| May 29 | 181.16 | 200 | 175 | 200 | — | −$1.1M | — |
| May 28 | 182.97 | 200 | 175 | 200 | — | −$3.8M | 75.8% |
| May 27 | 190.89 | 200 | 175 | 200 | 210 | +$4.7M | 80.5% |
| May 26 | 196.17 | 200 | 202.5 | 200 | 200 | +$7.1M | — |
| May 22 | 194.05 | 200 | 202.5 | 200 | 197.5 | +$6.1M | 71.5% |
| May 21 | 191.89 | 200 | 160 | 200 | 195 | +$13.6M | 73.2% |
| May 20 | 180.69 | 200 | 160 | 200 | 210 | +$1.5M | 76.1% |
| May 19 | 175.83 | 200 | 160 | 200 | — | −$2.6M | 75.4% |
| May 18 | 178.55 | 200 | 202.5 | 200 | — | −$1.9M | — |
| May 15 | 191.81 | 200 | 202.5 | 200 | 200 | +$4.4M | 73.1% |
| May 14 | 208.28 | 210 | 185 | 210 | 200 | +$25.3M | 82.6% |
| May 13 | 206.51 | 210 | 167.5 | 210 | 170 | +$26.0M | 85.4% |
| May 12 | 198.24 | 210 | 165 | 210 | 172.5 | +$19.2M | 80.1% |
| May 11 | 207.39 | 210 | 170 | 210 | 180 | +$20.4M | 87.6% |
| May 8 | 186.94 | 180 | 160 | 180 | 172.5 | +$16.4M | 72.4% |
| May 7 | 182.40 | 185 | 150 | 185 | 170 | +$31.2M | 74.8% |
| May 6 | 181.57 | 185 | 150 | 185 | 165 | +$23.4M | — |
| May 5 | 162.10 | 185 | 150 | 185 | 180 | +$5.5M | 76.2% |
| May 4 | 159.96 | 170 | 140 | 170 | 175 | +$4.2M | 70.6% |
| May 1 | 158.26 | 170 | 140 | 170 | 175 | +$3.7M | 67.7% |
| Apr 30 | 164.24 | 170 | 140 | 170 | 170 | +$10.3M | 70.3% |
These are the October 20, 2026 closing numbers. Members see GLW's map move live all session.
Common questions
Where can I download GLW gamma history?
The CSV on this page has every recorded GLW session: call wall, put wall, apex, flip, net gamma, ATM IV and max pain.
How often is GLW in short gamma?
34 of the last 60 sessions closed with dealers net short gamma.
Compare: gamma levels history on other tickers
Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.