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Stock movers: Aug 18, 2026

Tuesday, August 18, 2026 · gainers · losers · most active · catalysts · halts · frozen daily record

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Data provenance
US regular session 2026-08-18 (ET). Pack generated 2026-09-30T22:30:32.788Z.
Captured: movers 2026-09-30T22:30:31.180Z · halts 2026-09-30T22:30:32.616Z · squeeze 2026-09-30T22:30:32.616Z · heat 2026-09-30T22:30:32.617Z · news 2026-09-30T22:30:32.788Z
Quotes delayed at least 15 min · delayed-redistributable · How we source data · Data pack (JSON)

On Tuesday, August 18, 2026, BIAF led US-listed gainers tracked by Tapeboard, closing at $0.48, up 23.6% on 169.3M shares. LGCL fell hardest, closing at $0.22, down 84.1% on 111.8M shares. BIAF was the most-active name with 169.3M shares traded.

Top gainers — Aug 18, 2026

US-listed gainers tracked by Tapeboard at the close, ranked by percent change

SymbolNameCloseChangeVolume
BIAFBIOAFFINITY TECHNOLO$0.48+23.6%169.3M
DVLTDATAVAULT AI INC$0.39+22.3%146.2M
SNDQTRADR 2X SHORT SNDK DAILY ETF$14.59+19.4%61.7M
SOXSDIREXION DAILY SEMICONDUCTOR BEAR 3X ETF$44.52+16.1%74.4M
CRMSALESFORCE INC$195.95+2.6%14.1M
NKENIKE INC Class B$40.09+2.6%39.1M
NFLXNETFLIX INC$77.87+2.4%36.1M
CASTFREECAST INC A$2.50+1.9%141.7M
PFEPFIZER INC$27.25+1.4%34.6M
AAPLAPPLE INC$309.83+1.4%53.3M

Top losers — Aug 18, 2026

US-listed losers tracked by Tapeboard at the close, ranked by percent change

SymbolNameCloseChangeVolume
LGCLLUCAS GC LTD$0.22−84.1%111.8M
OSRHOSR HEALTH INC$0.38−35.3%144.3M
SNXXINVESTMENT MANAGERS SER TR II TRADR 2X LONG SNDK DAILY ETF$15.44−19.0%128.6M
SOXLDirexion Daily Semicondct Bull 3X ETF$127.87−15.6%85.7M
MSTUT-REX 2X LONG MSTR DAILY TARGET ETF$1.71−9.1%133.3M
DRAMROUNDHILL MEMORY ETF$54.93−9.0%67.6M
MUMICRON TECHNOLOGY IN$937.50−7.3%36.9M
INTCINTEL CORP$96.27−7.0%121.3M
NOKNOKIA CORP Series A ADR$10.38−3.7%111.6M
PATHUIPATH INC A$15.53−2.9%94.0M

Most active — Aug 18, 2026

US-listed names by dollar volume at the close

SymbolNameCloseChangeVolume
BIAFBIOAFFINITY TECHNOLO$0.49+23.6%169.3M
DVLTDATAVAULT AI INC$0.39+22.3%146.2M
OSRHOSR HEALTH INC$0.39−35.3%144.3M
CASTFREECAST INC A$2.51+1.9%141.7M
MSTUT-REX 2X LONG MSTR DAILY TARGET ETF$1.71−9.1%133.3M
SNXXINVESTMENT MANAGERS SER TR II TRADR 2X LONG SNDK DAILY ETF$15.44−19.0%128.6M
TSLLDirexion Daily TSLA Bull 2X Shares$8.44−2.0%123.3M
INTCINTEL CORP$96.28−7.0%121.3M
LGCLLUCAS GC LTD$0.22−84.1%111.8M
NOKNOKIA CORP Series A ADR$10.38−3.7%111.6M

Unusual volume — Aug 18, 2026

Names trading far above their typical volume

SymbolNameCloseChangeVolume
BIAFBIOAFFINITY TECHNOLO$0.49+23.6%169.3M
XOSXOS INC$4.53+1.2%108.2M
OSRHOSR HEALTH INC$0.39−35.3%144.3M
CASTFREECAST INC A$2.51+1.9%141.7M
LGCLLUCAS GC LTD$0.22−84.1%111.8M
DVLTDATAVAULT AI INC$0.39+22.3%146.2M
SNDQTRADR 2X SHORT SNDK DAILY ETF$14.59+19.4%61.7M

52-week highs — Aug 18, 2026

Names closing at fresh 52-week highs — not recorded for this date.

52-week lows — Aug 18, 2026

Names closing at fresh 52-week lows — not recorded for this date.

News catalysts behind the day's movers

Catalyst headlines for this date are not recorded.

Trading halts on this date

Halt detail for this date is not recorded (captured outside the live feed's retention window).

Short-squeeze leaderboard this date

The squeeze-leaderboard snapshot for this date is not recorded (the board serves the current day).

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