thetaOwl

VST

Vistra Corp.Close $144.00EOD only
Max Pain
$141.00
Next expiry May 22, 2026
Expected Move
±$4.86
3.4% from close
Price Gap
-3.00
Distance to max pain
IV Rank
3
Low premium
P/C OI
0.83
Slightly call-heavy
Consensus
4/4
Partial coverage
Published snapshot: May 20, 2026 close
End-of-day snapshot

This page reflects VST options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.

Published Snapshot
May 20, 2026 close
VST Theta Report
Analysis based on market close March 31, 2026

Consensus-supported lens with chain history and key metrics in the rail.

Theta Verdict

Attractiveness7 / 10
Sizing: Moderate
Primary: Sell defined-risk put spreads below spot, targeting high-IV expirations.
Invalidation: Close below $150 gamma flip or if spot breaches short put strike.
Confidence:
5.5 / 10
base 5; +1 high IV; +0.5 defined-risk focus; -1 trending gamma; -0.5 moderate liquidity

IV Environment

IV Regime
High
IV vs VIX
IV 57.5% — significantly elevated, typical for a stock like VST.
Favorable?
Yes

Term structure: Humped at 5/08 (38 DTE, IV 63.1%), elevated across front months.

💰High IV (>55%) provides rich premium for sellers.
⚠️IV term structure peaks in May, ideal for 30-45 DTE sales.

Pin Risk Assessment

Spot vs MP: Below max pain by 3.0% (spot $150.33 vs MP $155)

GEX regime: Trending (GEX -$10.0M — pro-cyclical)

Gamma flip: ~$150.00At ~$150. Negative GEX below this level suggests dealers amplify moves downward.

OI concentrations: Major put OI at $150 (8.5K), $110 (8.4K), $195 (7.3K). Major call OI at $190 (6.4K), $170 (5.2K).

Verdict: Unfavorable — negative GEX and spot below max pain suggest a trending, not pinning, environment. Credit positions must be defensive.

Premium Opportunities

#1
put spread
Sell $145/$140 put spread, exp 2026-05-01 (31 DTE)
High IV (57.2%) at this expiration. Strikes are below current spot and the $150 gamma flip, providing a buffer. Defines risk in a trending gamma regime.
Credit: $1.15-$1.45
Max loss: $3.55
BE: $143.85
Mgmt: Close at 65% max profit. Exit if spot closes below $145. Roll only if IV remains >50% and more than 21 DTE.
#2
put spread
Sell $140/$135 put spread, exp 2026-05-15 (45 DTE)
Targets peak IV term structure (58.9% at 45 DTE). Strikes are well below spot and the nearest major OI support ($150), offering a high-probability buffer in a negative GEX environment.
Credit: $1.40-$1.75
Max loss: $3.60
BE: $138.60
Mgmt: Close at 50% max profit. Exit if spot breaches $140. Manage early if IV collapses post-earnings (May 6/7).
#3
covered call
Sell $160 call, exp 2026-04-24 (24 DTE), against 100 shares at ~$150
Spot is below max pain ($155) and call wall ($170). Selling the call capitalizes on elevated IV (57.4%) and provides income with a 6.5% upside to strike. Defensive in a negative GEX downtrend.
Credit: $2.80-$3.30
BE: Share cost minus credit
Mgmt: Close call at 50% profit. Roll up and out if share price approaches $158. Consider assignment acceptable above $160.
#4
iron condor
Sell $140/$135P x $165/$170C, exp 2026-05-08 (38 DTE)
Captures the highest IV on the curve (63.1%). Wide wings ($135-$170) align with expected move (±$14.40) and avoid major OI magnets ($150P, $170C). Defined risk suits the trending regime.
Credit: $1.90-$2.40
Max loss: $3.10
BE: 137.10 / 167.90
Mgmt: Close at 40% max profit due to wider wings. Exit entire position if spot breaches either short strike ($140 or $165). Expect moderate slippage on entry/exit.

Risk Alerts

!Earnings expected 2026-05-06 or 2026-05-07 — CLOSE all short premium positions before the announcement. Never sell naked through earnings.
!Trending Gamma Regime (GEX -$10.0M) — Negative gamma below $150 means price moves can accelerate downward, threatening put credit spreads. Be ready to defend/exit.
!Moderate Liquidity — Total OI ~280K. Multi-leg strategies (e.g., iron condors) will face slippage. Use limit orders and assume mid-point of bid-ask for credit estimates.
!High IV Crush Risk Post-Earnings — IV is elevated (58%). A significant drop after May earnings will rapidly decay premium value, hurting short Vega positions.
!Major OI at $150 Put (8.5K) — This strike acts as a weak magnet. A break below could trigger accelerated selling due to dealer hedging (negative GEX).
!Unusual Put Activity at $110 (May 15) — Large block trade (1,009 vol vs 351 OI) may indicate institutional downside hedging. Monitor for follow-through flow.
How to Use These Reports
This theta reflects the market close on March 31, 2026.
What the reports do

Each report translates the same market-close options snapshot into a specific lens such as directional bias, premium-selling posture, flow quality, or earnings setup.

How traders use them

Reports are most useful for narrowing the playbook, surfacing entry and risk context, and deciding which raw data page to inspect next.

What to remember

These are interpretation layers, not execution guarantees. Validate the setup against chain liquidity, expected move, and exposure before sizing risk.

If the report conviction and the raw data disagree, slow down and resolve the mismatch before sizing risk.