# CHYM: options-positioning snapshot

Canonical: https://halfonadouble.com/stock/CHYM
Data through: 2026-11-13 close
Publisher: Half on a Double

| Published field | Value |
| --- | --- |
| Close (USD/share) | 33.55 |
| Delta neutral (USD/share) | 27.45 |
| Gamma neutral (USD/share) | 26.41 |
| Gamma max (USD/share) | 35.58 |
| Open interest (contracts) | 110,537 |
| Nearest-expiration max pain (USD/share) | 32.50 (2026-11-20) |
| All-expiration max pain (USD/share) | 27.50 |
| Net gamma exposure | 6,190,857 |
| Confirmed GEX flip (USD/share) | 26.41 |
| Call wall (USD/share) | 37.50 |
| Put wall (USD/share) | 35.00 |
| Put/call open-interest ratio | 0.53 |
| Net GEX sign history | positive for the last 104 sessions; negative on 10 of the past 252 |
| Max pain expiration record (past 252 sessions) | expiration close nearer the prior-session max pain on 1 of 12 expirations (8%); median distance 12.91% vs 1.55% for an unchanged prior close |
| Options catalyst-intensity score (0–100) | 27.9 |
| Options directional score (-100 to +100) | 0.8 |
| IV rank | 3.5 |
| Front-minus-back IV | 2.5 pp |
| Front 25-delta risk reversal | 3.6 pp |
| Call OI change, 1 session | -16 contracts · -0.0% |
| Put OI change, 1 session | +455 contracts · +1.2% |
| Call minus put OI growth, 1 session | -1.2 pp |
| Call OI change, 5 sessions | +2,397 contracts · +3.4% |
| Put OI change, 5 sessions | +1,899 contracts · +5.2% |
| Call minus put OI growth, 5 sessions | -1.7 pp |
| Daily call OI change surprise | -0.01σ (252 prior changes) |
| Daily put OI change surprise | +0.15σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.19σ (252 prior changes) |
| Daily open interest change (contracts) | 439 |
| Daily open interest change z-score (prior 252) | +0.06σ (252 prior changes) |
| Gamma max distance from close | +6.1% |
| Delta neutral distance from close | -18.2% |
| Prior-year sessions closer to gamma max | 16.7% of 252 |
| Prior-year sessions closer to delta neutral | 49.6% of 252 |

## Recent expirations vs max pain

| Expiration | Max pain (session before) | Prior close | Expiration close | Close vs max pain | Nearer |
| --- | ---: | ---: | ---: | ---: | --- |
| 2026-10-16 | 30.00 | 29.96 | 29.67 | -1.10% | Prior close |
| 2026-09-18 | 25.00 | 30.72 | 30.33 | +17.35% | Prior close |
| 2026-08-21 | 25.00 | 31.95 | 32.78 | +24.35% | Prior close |
| 2026-07-17 | 20.00 | 21.93 | 22.33 | +10.62% | Prior close |
| 2026-06-18 | 17.50 | 16.59 | 17.54 | +0.24% | Max pain |
| 2026-05-15 | 20.00 | 17.88 | 17.69 | -12.92% | Prior close |
| 2026-04-17 | 20.00 | 23.41 | 24.12 | +17.60% | Prior close |
| 2026-03-20 | 22.50 | 19.25 | 19.15 | -17.40% | Prior close |
| 2026-02-20 | 25.00 | 20.62 | 20.91 | -19.84% | Prior close |
| 2026-01-16 | 25.00 | 25.84 | 26.07 | +4.14% | Prior close |

Each expiration compares the last session before it, when it was the nearest expiration, with the expiration-session close; distances are percentages of that prior close. Underlying closes are not option settlement values. Descriptive history, not a forecast.

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 5 | +1.7% | +1.7% to +2.9% | 80% | -2.3% to +3.7% | 0.0% |
| above | Day +3 | 5 | +2.0% | -6.1% to +4.3% | 60% | -7.1% to +4.7% | 0.0% |
| above | Day +5 | 5 | +1.9% | -5.0% to +4.5% | 60% | -6.8% to +5.0% | 0.0% |
| above | Day +10 | 5 | +0.5% | -0.4% to +6.0% | 60% | -5.9% to +9.8% | 0.0% |
| below | Day +1 | 6 | +2.6% | +0.5% to +3.6% | 67% | -3.2% to +6.0% | 0.0% |
| below | Day +3 | 6 | +3.1% | +1.6% to +7.2% | 83% | -2.1% to +8.6% | 0.0% |
| below | Day +5 | 6 | +6.0% | +2.0% to +8.6% | 83% | -5.6% to +10.0% | 0.0% |
| below | Day +10 | 6 | +5.8% | +3.4% to +6.9% | 83% | -16.4% to +12.6% | 0.0% |

Returns are close-to-close after the labelled number of subsequent trading sessions. Cohorts require gamma max to be within 10% of the close on both crossing sessions. Historical windows can overlap and are not independent observations, so interval coverage is not guaranteed.

- [Machine-readable snapshot](https://halfonadouble.com/api/v1/tickers/CHYM.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/CHYM.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/CHYM.json?date=2026-11-13&public_schema=5)

An em dash means unavailable, not zero. Values use the same display rounding as the HTML page. This is a current snapshot; the 60-session close-versus-max-pain chart, full history and individual event paths are on the canonical page.

[Definitions and limitations](https://halfonadouble.com/methodology.md).