NEBIUS closed at USD 188.41, up 1.29%, after opening at USD 175.48 and swinging between USD 163.36 and USD 189.33 on volume of roughly 47.6 million shares.

The standout options activity featured a USD 13.35 million net debit bull call spread against a USD 8.55 million net credit bear call spread, showing clear disagreement among large traders. Although the largest single displayed trade leaned bullish, broader block flow exhibited repeated premium selling and capped-upside positioning, leaving the overall institutional tone slightly bearish rather than breakout-oriented.

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Options Indicators

NEBIUS currently has an implied volatility of 95.07%, and with an IV percentile of 32.67%, that places its volatility backdrop in a broadly neutral zone rather than an extreme one. Even so, the absolute IV level remains very high, and with an IV/HV ratio of 1.28, the options market is pricing in volatility above recent realized movement, suggesting contracts carry a noticeable premium and are not especially cheap on a relative basis.

The Call/Put volume ratio is 1.69.

Large Trades

A bull call spread with a net debit of $13.35 million was the largest displayed trade, expressing a moderately bullish view through upside call exposure financed by an out-of-the-money call sale. The position bought 5,000 May 21, 2027 $220 calls for $16.45 million and sold 5,000 January 15, 2027 $280 calls for $3.10 million, with both strikes above the $188.41 reference price and therefore out of the money. As a spread strategy, its size should be read as the provided net debit of $13.35 million, not the gross leg sum. Strategically, this is a directional upside bet with defined cost, suggesting the trader is willing to pay premium for a substantial move higher while capping part of the upside in exchange for reducing entry cost.

A bear call spread with a net credit of $8.55 million was the second displayed trade, signaling a bearish-to-neutral stance and a preference to collect premium if the stock fails to rally aggressively. The structure sold 3,800 February 19, 2027 $200 calls for $10.91 million and bought 3,800 January 15, 2027 $290 calls for $2.36 million, with both calls also out of the money versus the $188.41 stock reference. As a spread strategy, the correct size is the stated net credit of $8.55 million. The strategic intent here is premium collection combined with a directional view that upside should remain limited, making it a bearish call spread rather than an outright downside chase.

Overall, the bulk-order flow leans slightly bearish. While the largest single displayed trade was a sizable bullish call spread, the broader block activity shows repeated premium-selling and downside-leaning structures, including the second highlighted bear call spread and a full-day sentiment balance that tilts marginally to the bearish side. Taken together, the large-trade pattern suggests investors are not positioned for a clean breakout; instead, they appear to expect capped upside, choppier trading, or a need for downside protection, leaving the net institutional tone mildly negative rather than decisively bearish.

Strategy Reference

For a low assignment probability, a seller may consider the February 19, 2027 $280 call, which is far enough above the $188.41 reference to offer greater cushion than the nearby $200 strike, while those preferring limited margin may use a call credit spread such as selling the February 19, 2027 $200 call and buying the January 15, 2027 $290 call.