Biggest stock movers Wednesday: NFLX, DKNG, and more

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Stock futures rose slightly in premarket trading on Wednesday as investors looked ahead to Tesla's (TSLA) earnings report after the market closes.

Here are some of Wednesday's biggest stock movers:

BIGGEST STOCK GAINERS

* INTUITIVE SURGICAL (NASDAQ:ISRG [https://seekingalpha.com/symbol/ISRG]) +17% - Shares surged after reporting Q3 results that topped expectations on both revenue and earnings, driven by robust placements of its da Vinci surgical systems and higher procedure volumes across its da Vinci and Ion platforms. The company also repurchased 4M shares for $1.92B during the quarter. For FY25, Intuitive expects worldwide da Vinci procedure growth of 17–17.5%, non-GAAP gross margin of 67–67.5% (including a 0.7% tariff impact), and operating expense growth of 11–13%, reflecting continued investment in innovation and market expansion.
* DRAFTKINGS (NASDAQ:DKNG [https://seekingalpha.com/symbol/DKNG]) +4% - Shares rose after the company announced its entry into the predictions market business through the acquisition of Railbird Technologies, a CFTC-licensed exchange. The move marks a major strategic expansion beyond sports betting, enabling DraftKings to offer regulated event contracts across areas like finance, culture, and entertainment. The company also unveiled plans for a new mobile app, DraftKings Predictions, which will let users trade on real-world outcomes through multiple exchanges. CEO Jason Robins said Railbird’s team and technology, combined with DraftKings’ scale and expertise, will “position us to win in this incremental space,” broadening the company’s long-term growth and customer engagement potential.

BIGGEST STOCK LOSERS

* TEXAS INSTRUMENTS (NASDAQ:TXN [https://seekingalpha.com/symbol/TXN]) -9% - Shares plunged after posting mixed Q3 results and issuing weaker-than-expected Q4 guidance. The analog chipmaker expects Q4 earnings of $1.13–$1.39 per share (midpoint $1.21 vs. $1.39 est.) and revenue between $4.22B–$4.58B (midpoint $4.4B vs. $4.5B est.), signaling ongoing softness in end markets and cautious demand trends heading into year-end.
* AST SPACEMOBILE (NASDAQ:ASTS [https://seekingalpha.com/symbol/ASTS]) -7% - Shares slid after announcing a $50M cash repurchase of its 4.25% convertible senior notes due 2032 and a direct offering of ~2M Class A shares to noteholders participating in the deal. The company also priced $1B of new convertible senior notes due 2036 with an initial conversion price of about $96.30 per share, reflecting a 22.5% premium to the last closing price. The company will use net proceeds of roughly $982M (or $1.13B if the over-allotment option is exercised) for general corporate purposes, including deploying its global satellite constellation to expand AST SpaceMobile’s coverage in new strategic markets.
* NETFLIX (NASDAQ:NFLX [https://seekingalpha.com/symbol/NFLX]) -6% - Shares dropped after reporting Q3 results that met revenue expectations but missed on margins, hurt by a $619M charge tied to an ongoing Brazil tax dispute. Revenue rose 17.2% Y/Y to $11.51B, while operating income increased to $3.25B from $2.91B a year earlier. However, the operating margin slipped to 28.2% from 29.6% last year and 34.1% in Q2, with the tax-related expense cutting more than five percentage points from the margin. Excluding this impact, Netflix said it would have exceeded its prior guidance. For Q4, the company expects revenue growth of ~17% to $11.96B and operating income of $2.86B, reflecting steady growth in profitability and margins.

MORE ON RELATED STOCKS:

* Netflix Q3 Earnings: Solid Results, But Here Are 2 Bearish Takeaways [https://seekingalpha.com/article/4831692-netflix-stock-q3-earnings-solid-results-but-here-are-2-bearish-takeaways-maintain-hold]
* Intuitive Surgical, Inc. (ISRG) Q3 2025 Earnings Call Transcript [https://seekingalpha.com/article/4831638-intuitive-surgical-inc-isrg-q3-2025-earnings-call-transcript]
* Netflix, Inc. (NFLX) Q3 2025 Earnings Call Transcript [https://seekingalpha.com/article/4831663-netflix-inc-nflx-q3-2025-earnings-call-transcript]
* AST SpaceMobile drops 6%, prices $1B senior notes [https://seekingalpha.com/news/4506481-ast-spacemobile-drops-6-prices-1b-senior-notes]
* Intuitive Surgical updates 2025 da Vinci procedure growth guidance to 17%-17.5% while expanding da Vinci 5 placements internationally [https://seekingalpha.com/news/4506451-intuitive-surgical-updates-2025-da-vinci-procedure-growth-guidance-to-17-percentminus-17_5]