OPTIONS FLOW$VSTVistra Corp.Open ticker analysis →
Vistra options lit up on Friday when a $16.88M large options trade crossed in the Mar 19, 2027 $165 puts. The buyer paid up to get filled, and the strike sits deep in the money, so the position tracks the stock almost dollar for dollar.
What happened
The trade printed midday, around 1:55 p.m. ET on Friday, October 2, with $VST trading near $137.69. 4,950 contracts went through at $34.10 apiece, or $3,410 per contract, for $16.88M in total premium.
It printed as a cross, with a buyer and seller matched in one pre-arranged print, a common way for large desks to trade size.
There were already 5,856 contracts open at this strike, so the trade could be adding to a position or unwinding one. The next open-interest update will settle which.
Why it matters
Buying puts is either protection or a bet on a drop. The buyer needs $VST under about $130.90 by Mar 19, 2027 to profit at expiration, 4.9% below where the stock traded. Size like this often hedges a large stock position, so it reads as caution more than a call for a collapse.
Adjusted for delta, the position behaves like roughly 326,200 shares of VST, or about $44.92M of stock exposure in a company valued near $46.9B.
With 168 days until Mar 19, 2027, this is positioning for months, not a quick flip. Implied volatility sat near 46%, a middle-of-the-road price for movement.
Over the last 11 sessions $VST has traded between $133.44 and $146.11 and is down 1.4% over that stretch. The stock came into this trade in the middle of that range.
The numbers
| Contract | VST Mar 19, 2027 $165 Put |
|---|---|
| Expiration | Mar 19, 2027 (168 days) |
| Execution | Large Options Trade |
| Side | Buy side (at or near the ask) |
| Contracts | 4,950 |
| Price | $34.10 ($3,410 per contract) |
| Total premium | $16.88M |
| Stock at the trade | $137.69 |
| Strike vs. stock | 19.8% in the money |
| Breakeven at expiration | $130.90 |
| Delta | 0.66 |
| Implied volatility | 46% |
| Open interest before | 5,856 |
Three ways this could play out
Bullish continuation
If $VST pushes through $146.11, the top of its recent range, the pressure lands on this buyer, and $130.90 becomes the level that decides whether the trade is saved.
Bearish rejection
If $VST slips under $133.44, the bottom of its recent range, the move works for this buyer and the flow starts to look like early conviction rather than noise.
Neutral stabilization
If $VST chops between $133.44 and $146.11 into Mar 19, 2027, time decay does the work. That slowly bleeds this buyer, who loses a little value every day the stock goes nowhere.
What to watch next
- $130.90: breakeven for this trade at expiration.
- $165 strike: whether $VST moves toward it or away from it.
- Open interest at the $165 put in the next session. A jump confirms a new position; a drop points to a close.
- Repeat flow in the Mar 19, 2027 expiration. More size at nearby strikes would show this was not a one-off.
- $133.44 and $146.11: the edges of VST’s recent trading range.
- March 19, 2027: expiration, 168 days out.
