DDOG is down -4.80% to about $253.47 during regular trading, extending an earlier premarket slide after third-quarter results were released this morning. The stock initially fell roughly -6.5% premarket as investors reassessed results and guidance against a very high bar.

CRWV fell -7.19% intraday to roughly $64.68, down from a $69.69 prior close, during regular trading hours. Primary catalyst: reports that its three co-founders have sold about $3.3 billion of stock since the 2025 IPO, fueling insider-selling concerns.

COHR is down -5.32% during regular market hours, trading near $237.27 versus a prior close of $250.60. The decline extends a sector-wide selloff in AI optical-networking names as investors rotate out of high-valuation tech into defensives.

TWLO is down -7.38% to $253.22 during regular trading hours, a -$20.18 decline from its prior close of $273.40. Primary catalyst: HSBC downgraded the stock to Reduce from Hold, keeping a $211 price target, citing valuation after a ~30% rally since Meta launched its Muse AI agent.

OKTA is trading down -6.09% during the regular session at about $195.83 versus a prior close of $208.52. Primary catalyst: hotter-than-expected inflation data renewed fears of higher-for-longer interest rates, pressuring high-multiple tech and cybersecurity names.

SMH is down -1.52% during regular trading, at $550.32 versus a prior close of $558.84. The decline extends a multi-day semiconductor rout, with the Philadelphia Semiconductor Index off roughly 12% over the past six sessions.

SOXS rallied +6.14% during regular trading, moving from a $43.64 prior close to $46.32 as semiconductors extended their sharp selloff. The gain reflects its 3x inverse exposure: the iShares Semiconductor ETF (SOXX) fell for an eighth straight session, its longest losing streak in roughly 11 years.

MRNA fell about -9.80% during regular trading to roughly $213 from a prior close of $236.50. Primary catalyst: Citi downgraded the stock to Sell with a Street-low $80 price target, calling its valuation "unrealistic" after a 500%+ 2026 rally.

SOXX is trading down -1.84% at roughly $505.22 versus a prior close of $514.71, with the decline occurring during regular market hours. The slide extends an eight-session losing streak as AI infrastructure financing fears persist, with CoreWeave's debt stress renewing doubts about chip demand sustainability.

NET fell -4.85% to roughly $300.97 during the regular session, versus the prior close of $316.32. The slide began premarket, dropping about -2.5% after Cloudflare disclosed issues with its global network services that caused widespread website outages.

STX is down -4.91% during regular market hours, trading near $656.92 versus a prior close of $690.81. Primary catalyst: Wells Fargo cut its price target to $865 from $1,180, a roughly -27% reduction, while maintaining an Overweight rating ahead of earnings.

ALAB is down -4.88% during regular market hours, falling to $287.25 from a prior session close of $301.98. A broad tech and AI-sector selloff pressured high-growth semiconductor names, with Nasdaq weakness driving the decline.

SNOW is trading down -5.32% to about $317.26, from a prior close of $335.07, during regular market hours. The primary catalyst was a proposed $3.5 billion private placement of convertible senior notes, stoking shareholder dilution concerns.

VEEA is trading down about -10.95% to roughly $4.31 from a $4.84 prior close during the regular session on Oct. 16. The decline follows extreme volatility after prior sharp gains (+47% on Oct. 9 and +12.8% on Oct. 13) tied to regained Nasdaq compliance and the NovaGen merger term sheet.

IREX is down -10.88% in regular trading, at roughly $6.31 versus a $7.08 prior close. The fund delivers 2x daily leveraged exposure to IREN Limited, a Bitcoin-mining and AI-infrastructure firm, magnifying the underlying stock's decline.

SK is trading down -10.61% (-$1.83) at about $15.41 during regular-session trading on Oct 16, versus a prior close of $17.24. The decline extends a steep multi-day slide — the stock has lost roughly -37% over the past week.

PDSB is trading down -10.77% to about $1.16 during regular market hours, extending a sharp multi-day pullback from its $1.79 high on Oct. 13. The slide follows a resale registration covering up to 16.5 million common shares for selling stockholders, creating a dilution overhang.

SVRN fell -11.15% in regular-hours trading to about $37.12, from a prior close of $41.78. The primary catalyst was a short-seller report by Fugazi Research labeling the micro-cap digital-asset (NEAR) treasury "uninvestable."

IREG is down -11.17% during regular market hours, sliding to $3.58 from a previous close of $4.03. The fund tracks 2x the daily move of IREN Limited, whose shares fell roughly -4% to -5% intraday, amplifying the decline in IREG.

SKHL fell -11.54% during regular trading to $5.90, down from the prior session's $6.67 close. As a 2x leveraged ETF tracking SK Hynix ADRs, it amplified the underlying semiconductor selloff.