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BlackRock Health Sciences Trust

BME
Exchange
NYSE
SEC CIK
0001314966

No open-market purchases or sales by BlackRock Health Sciences Trust insiders were filed in the last 90 days; 80 institutions reported holding it in 13F filings for Q2 2026, worth $111.2M in total; no superinvestor holds it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
22.8K
Shares, settlement Oct 30, 2026
Change
−6.97K
−23.4% vs. Oct 15, 2026
Days to cover
1.00
Short interest ÷ average daily volume
Average daily volume
38.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 8,007 sharesNov 15, 2024: 14,082 sharesNov 29, 2024: 6,169 sharesDec 13, 2024: 7,404 sharesDec 31, 2024: 15,047 sharesJan 15, 2025: 29,012 sharesJan 31, 2025: 16,822 sharesFeb 14, 2025: 14,915 sharesFeb 28, 2025: 15,143 sharesMar 14, 2025: 12,676 sharesMar 31, 2025: 4,912 sharesApr 15, 2025: 8,402 sharesApr 30, 2025: 3,406 sharesMay 15, 2025: 18,571 sharesMay 30, 2025: 16,112 sharesJun 13, 2025: 13,069 sharesJun 30, 2025: 21,982 sharesJul 15, 2025: 23,760 sharesJul 31, 2025: 20,244 sharesAug 15, 2025: 12,875 sharesAug 29, 2025: 20,233 sharesSep 15, 2025: 18,328 sharesSep 30, 2025: 12,807 sharesOct 15, 2025: 12,756 sharesOct 31, 2025: 23,794 sharesNov 14, 2025: 24,617 sharesNov 28, 2025: 12,455 sharesDec 15, 2025: 30,636 sharesDec 31, 2025: 54,624 sharesJan 15, 2026: 61,028 sharesJan 30, 2026: 59,022 sharesFeb 13, 2026: 72,489 sharesFeb 27, 2026: 81,198 sharesMar 13, 2026: 67,055 sharesMar 31, 2026: 78,212 sharesApr 15, 2026: 82,202 sharesApr 30, 2026: 66,058 sharesMay 15, 2026: 55,848 sharesMay 29, 2026: 50,533 sharesJun 15, 2026: 68,970 sharesJun 30, 2026: 60,112 sharesJul 15, 2026: 53,073 sharesJul 31, 2026: 37,032 sharesAug 14, 2026: 36,484 sharesAug 31, 2026: 42,026 sharesSep 15, 2026: 33,820 sharesSep 30, 2026: 25,549 sharesOct 15, 2026: 29,766 sharesOct 30, 2026: 22,797 shares
Short interest in BME by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202622.8K−6.97K−23.4%38.6K1.00
Oct 15, 202629.8K+4.22K+16.5%45.1K1.00
Sep 30, 202625.5K−8.27K−24.5%36.5K1.00
Sep 15, 202633.8K−8.21K−19.5%36.4K1.00
Aug 31, 202642.0K+5.54K+15.2%45.9K1.00
Aug 14, 202636.5K−548−1.5%43.8K1.00
Jul 31, 202637.0K−16.0K−30.2%48.6K1.00
Jul 15, 202653.1K−7.04K−11.7%41.9K1.27
Jun 30, 202660.1K−8.86K−12.8%48.3K1.25
Jun 15, 202669.0K+18.4K+36.5%50.9K1.36
May 29, 202650.5K−5.32K−9.5%42.9K1.18
May 15, 202655.8K−10.2K−15.5%56.2K1.00
Apr 30, 202666.1K−16.1K−19.6%48.7K1.36
Apr 15, 202682.2K+3.99K+5.1%43.5K1.89
Mar 31, 202678.2K+11.2K+16.6%55.3K1.42
Mar 13, 202667.1K−14.1K−17.4%45.1K1.49
Feb 27, 202681.2K+8.71K+12.0%39.1K2.08
Feb 13, 202672.5K+13.5K+22.8%31.5K2.30
Jan 30, 202659.0K−2.01K−3.3%38.5K1.53
Jan 15, 202661.0K+6.40K+11.7%41.7K1.46
Dec 31, 202554.6K+24.0K+78.3%39.9K1.37
Dec 15, 202530.6K+18.2K+146.0%37.3K1.00
Nov 28, 202512.5K−12.2K−49.4%41.0K1.00
Nov 14, 202524.6K+823+3.5%55.4K1.00
Oct 31, 202523.8K+11.0K+86.5%41.6K1.00
Oct 15, 202512.8K−51−0.4%71.6K1.00
Sep 30, 202512.8K−5.52K−30.1%47.9K1.00
Sep 15, 202518.3K−1.91K−9.4%51.2K1.00
Aug 29, 202520.2K+7.36K+57.2%57.4K1.00
Aug 15, 202512.9K−7.37K−36.4%64.4K1.00
Jul 31, 202520.2K−3.52K−14.8%47.8K1.00
Jul 15, 202523.8K+1.78K+8.1%41.8K1.00
Jun 30, 202522.0K+8.91K+68.2%52.4K1.00
Jun 13, 202513.1K−3.04K−18.9%31.1K1.00
May 30, 202516.1K−2.46K−13.2%47.9K1.00
May 15, 202518.6K+15.2K+445.2%53.2K1.00
Apr 30, 20253.41K−5.00K−59.5%38.8K1.00
Apr 15, 20258.40K+3.49K+71.1%62.0K1.00
Mar 31, 20254.91K−7.76K−61.3%34.5K1.00
Mar 14, 202512.7K−2.47K−16.3%46.9K1.00
Feb 28, 202515.1K+228+1.5%27.5K1.00
Feb 14, 202514.9K−1.91K−11.3%35.8K1.00
Jan 31, 202516.8K−12.2K−42.0%50.4K1.00
Jan 15, 202529.0K+14.0K+92.8%78.9K1.00
Dec 31, 202415.0K+7.64K+103.2%96.2K1.00
Dec 13, 20247.40K+1.24K+20.0%57.4K1.00
Nov 29, 20246.17K−7.91K−56.2%61.1K1.00
Nov 15, 202414.1K+6.08K+75.9%35.5K1.00
Oct 31, 20248.01K+1.98K+32.8%35.8K1.00

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in BME by settlement date
Settlement dateSharesPriceValue
Oct 9, 202634$42.98$1.46K
Sep 17, 2026138$44.34$6.12K
Aug 28, 202695$46.10$4.38K
Aug 19, 20261,425$44.86$63.9K
Jul 22, 202693$42.60$3.96K
Jul 15, 2026968$42.51$41.1K
Jul 14, 20261,860$42.95$79.9K
Jul 13, 2026306$43.01$13.2K
Jun 30, 2026102$42.91$4.38K
Jun 24, 202657$40.31$2.30K
Jun 16, 2026674$40.42$27.2K
Jun 15, 20263,658$40.94$149.8K
Jun 5, 20262,312$39.87$92.2K
Jun 4, 20262$39.21$78.42
May 14, 2026560$39.55$22.1K
May 13, 2026155$39.40$6.11K
May 5, 20263$39.13$117.39
Apr 20, 2026490$39.92$19.6K
Apr 15, 2026146$40.05$5.85K
Apr 14, 20261,706$39.41$67.2K
Apr 8, 2026123$38.43$4.73K
Apr 7, 202628$38.35$1.07K
Mar 23, 202616$38.67$618.72
Mar 16, 202643$39.72$1.71K
Feb 13, 20261,942$42.15$81.9K
Feb 6, 202695$41.79$3.97K
Feb 5, 2026121$41.74$5.05K
Jan 22, 20264,538$41.97$190.5K
Jan 16, 2026213$41.89$8.92K
Jan 15, 2026105$42.07$4.42K

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in BME by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 202617,893038,35546.7%
Nov 9, 202617,443045,30438.5%
Nov 6, 20263,965026,22715.1%
Nov 5, 202621,9221,00051,32942.7%
Nov 4, 202611,65460035,87432.5%
Nov 3, 202617,714032,36954.7%
Nov 2, 202623,852048,11249.6%
Oct 30, 202621,484041,82351.4%
Oct 29, 202613,310029,67244.9%
Oct 28, 202615,733020,29777.5%
Oct 27, 20269,972013,18875.6%
Oct 26, 202611,325017,41565.0%
Oct 23, 202619,05936728,22467.5%
Oct 22, 202614,117021,75764.9%
Oct 21, 202612,121016,57173.1%
Oct 20, 202612,89515922,97456.1%
Oct 19, 20268,623022,11739.0%
Oct 16, 20266,562019,03034.5%
Oct 15, 202611,933022,67452.6%
Oct 14, 202617,092030,43156.2%
Oct 13, 202624,175031,59676.5%
Oct 12, 202617,824026,17268.1%
Oct 9, 202617,535033,95851.6%
Oct 8, 202617,446023,28074.9%
Oct 7, 20266,944024,22028.7%
Oct 6, 202620,314039,42751.5%
Oct 5, 202610,100030,07633.6%
Oct 2, 202616,445028,56657.6%
Oct 1, 20269,056018,41949.2%
Sep 30, 20266,443018,59234.7%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in BME
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T220,303233131,33399713.4%
Sep 28, 2026T222,13444987,8451,02420.1%
Sep 21, 2026T217,15622693,20093215.5%
Sep 14, 2026T212,35714098,38486611.2%
Sep 7, 2026T217,47013394,42598715.6%
Aug 31, 2026T223,392363113,92999417.0%
Aug 24, 2026T226,511280139,1431,07716.0%
Aug 17, 2026T220,111224133,9191,30913.1%
Aug 10, 2026T221,163256109,0091,12316.3%
Aug 3, 2026T227,326337124,2241,22018.0%
Jul 27, 2026T233,502484152,5821,27818.0%
Jul 20, 2026T225,484385105,6341,09619.4%