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Climb Bio, Inc.

CLYM
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001768446

In the last 90 days, Climb Bio, Inc. insiders filed 0 open-market purchases and 1 sale; 108 institutions reported holding it in 13F filings for Q2 2026, worth $734.3M 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
10.6M
Shares, settlement Oct 30, 2026
Change
+827.1K
+8.5% vs. Oct 15, 2026
Days to cover
7.76
Short interest ÷ average daily volume
Average daily volume
1.37M
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 4,978,650 sharesNov 15, 2024: 4,940,821 sharesNov 29, 2024: 4,895,678 sharesDec 13, 2024: 4,930,125 sharesDec 31, 2024: 4,816,219 sharesJan 15, 2025: 4,310,782 sharesJan 31, 2025: 4,294,214 sharesFeb 14, 2025: 1,898,020 sharesFeb 28, 2025: 1,996,663 sharesMar 14, 2025: 2,192,464 sharesMar 31, 2025: 2,195,271 sharesApr 15, 2025: 2,300,096 sharesApr 30, 2025: 2,323,869 sharesMay 15, 2025: 2,194,652 sharesMay 30, 2025: 2,194,549 sharesJun 13, 2025: 2,151,584 sharesJun 30, 2025: 1,413,053 sharesJul 15, 2025: 1,382,404 sharesJul 31, 2025: 1,313,475 sharesAug 15, 2025: 1,118,221 sharesAug 29, 2025: 1,206,690 sharesSep 15, 2025: 878,949 sharesSep 30, 2025: 919,355 sharesOct 15, 2025: 861,346 sharesOct 31, 2025: 1,289,125 sharesNov 14, 2025: 1,540,104 sharesNov 28, 2025: 1,881,380 sharesDec 15, 2025: 2,219,442 sharesDec 31, 2025: 1,816,835 sharesJan 15, 2026: 1,801,497 sharesJan 30, 2026: 2,031,687 sharesFeb 13, 2026: 1,918,833 sharesFeb 27, 2026: 1,753,708 sharesMar 13, 2026: 1,803,792 sharesMar 31, 2026: 1,775,067 sharesApr 15, 2026: 1,610,632 sharesApr 30, 2026: 1,776,821 sharesMay 15, 2026: 2,090,647 sharesMay 29, 2026: 1,908,617 sharesJun 15, 2026: 3,001,897 sharesJun 30, 2026: 5,096,670 sharesJul 15, 2026: 6,871,210 sharesJul 31, 2026: 7,037,695 sharesAug 14, 2026: 7,557,264 sharesAug 31, 2026: 7,300,939 sharesSep 15, 2026: 8,508,354 sharesSep 30, 2026: 9,718,558 sharesOct 15, 2026: 9,787,492 sharesOct 30, 2026: 10,614,602 shares
Short interest in CLYM by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202610.6M+827.1K+8.5%1.37M7.76
Oct 15, 20269.79M+68.9K+0.7%946.2K10.34
Sep 30, 20269.72M+1.21M+14.2%1.72M5.64
Sep 15, 20268.51M+1.21M+16.5%1.88M4.53
Aug 31, 20267.30M−256.3K−3.4%1.23M5.92
Aug 14, 20267.56M+519.6K+7.4%1.20M6.30
Jul 31, 20267.04M+166.5K+2.4%1.04M6.75
Jul 15, 20266.87M+1.77M+34.8%1.36M5.05
Jun 30, 20265.10M+2.09M+69.8%1.73M2.95
Jun 15, 20263.00M+1.09M+57.3%1.53M1.96
May 29, 20261.91M−182.0K−8.7%676.3K2.82
May 15, 20262.09M+313.8K+17.7%973.0K2.15
Apr 30, 20261.78M+166.2K+10.3%876.8K2.03
Apr 15, 20261.61M−164.4K−9.3%532.3K3.03
Mar 31, 20261.78M−28.7K−1.6%443.2K4.00
Mar 13, 20261.80M+50.1K+2.9%570.1K3.16
Feb 27, 20261.75M−165.1K−8.6%619.9K2.83
Feb 13, 20261.92M−112.9K−5.6%555.7K3.45
Jan 30, 20262.03M+230.2K+12.8%653.6K3.11
Jan 15, 20261.80M−15.3K−0.8%879.0K2.05
Dec 31, 20251.82M−402.6K−18.1%1.64M1.11
Dec 15, 20252.22M+338.1K+18.0%3.20M1.00
Nov 28, 20251.88M+341.3K+22.2%330.9K5.69
Nov 14, 20251.54M+251.0K+19.5%413.7K3.72
Oct 31, 20251.29M+427.8K+49.7%1.05M1.23
Oct 15, 2025861.3K−58.0K−6.3%844.6K1.02
Sep 30, 2025919.4K+40.4K+4.6%426.7K2.15
Sep 15, 2025878.9K−327.7K−27.2%444.3K1.98
Aug 29, 20251.21M+88.5K+7.9%765.3K1.58
Aug 15, 20251.12M−195.3K−14.9%908.5K1.23
Jul 31, 20251.31M−68.9K−5.0%201.2K6.53
Jul 15, 20251.38M−30.6K−2.2%217.2K6.37
Jun 30, 20251.41M−738.5K−34.3%564.7K2.50
Jun 13, 20252.15M−43.0K−2.0%234.2K9.19
May 30, 20252.19M−1030.0%136.8K16.04
May 15, 20252.19M−129.2K−5.6%143.4K15.30
Apr 30, 20252.32M+23.8K+1.0%106.2K21.88
Apr 15, 20252.30M+104.8K+4.8%205.5K11.19
Mar 31, 20252.20M+2.81K+0.1%123.4K17.79
Mar 14, 20252.19M+195.8K+9.8%234.7K9.34
Feb 28, 20252.00M+98.6K+5.2%446.7K4.47
Feb 14, 20251.90M−2.40M−55.8%342.2K5.55
Jan 31, 20254.29M−16.6K−0.4%253.6K16.93
Jan 15, 20254.31M−505.4K−10.5%826.3K5.22
Dec 31, 20244.82M−113.9K−2.3%525.3K9.17
Dec 13, 20244.93M+34.4K+0.7%139.7K35.28
Nov 29, 20244.90M−45.1K−0.9%235.9K20.76
Nov 15, 20244.94M−37.8K−0.8%379.6K13.02
Oct 31, 20244.98M+279.3K+5.9%275.4K18.08

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 CLYM by settlement date
Settlement dateSharesPriceValue
Oct 13, 202630$10.83$324.9
Sep 28, 2026249$11.66$2.90K
Sep 24, 20261,992$12.52$24.9K
Sep 21, 202634,170$14.05$480.1K
Sep 18, 202670$14.06$984.2
Sep 9, 2026279$15.90$4.44K
Sep 8, 202614,543$15.52$225.7K
Aug 28, 20264$15.06$60.24
Aug 27, 202636$16.08$578.88
Aug 24, 2026975$17.28$16.8K
Aug 21, 202683$17.02$1.41K
Aug 17, 202627,387$16.33$447.2K
Aug 14, 202649$14.73$721.77
Aug 4, 20263,560$11.81$42.0K
Jul 17, 2026154$12.58$1.94K
Jul 16, 2026139$13.87$1.93K
Jul 14, 20266,255$13.21$82.6K
Jul 2, 202654$13.29$717.66
Jun 29, 202636,701$13.08$480.0K
Jun 26, 20262,301$12.66$29.1K
Jun 25, 2026680$12.75$8.67K
Jun 24, 20267,452$12.30$91.7K
Jun 15, 2026818$11.44$9.36K
Jun 10, 202658,000$11.14$646.1K
Jun 2, 202692,256$11.80$1.09M
Jun 1, 2026363$10.96$3.98K
May 19, 2026100$9.88$988
May 14, 2026103$11.41$1.18K
May 13, 20267,860$11.17$87.8K
Apr 24, 202664$9.02$577.28

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 CLYM by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 2026226,5440347,75265.1%
Nov 10, 2026376,7450675,27155.8%
Nov 9, 2026633,825236,413888,92671.3%
Nov 6, 2026298,3420456,07565.4%
Nov 5, 2026257,6769,972422,02061.1%
Nov 4, 2026180,82411,950336,67153.7%
Nov 3, 202694,5480204,90846.1%
Nov 2, 2026269,0260364,04373.9%
Oct 30, 2026176,8280254,14069.6%
Oct 29, 2026152,5280247,77661.6%
Oct 28, 2026357,4230447,89079.8%
Oct 27, 2026331,27864,4552,096,73515.8%
Oct 26, 2026376,38013,5801,698,39722.2%
Oct 23, 2026107,2870138,75377.3%
Oct 22, 2026100,4150154,97764.8%
Oct 21, 2026231,8240335,93069.0%
Oct 20, 2026228,2170436,08852.3%
Oct 19, 2026167,7122,932349,66648.0%
Oct 16, 2026174,5525,376291,78859.8%
Oct 15, 2026119,6050163,89173.0%
Oct 14, 2026227,2670391,11058.1%
Oct 13, 2026144,5430242,29859.7%
Oct 12, 2026236,6000314,90875.1%
Oct 9, 2026159,58292217,44473.4%
Oct 8, 2026334,7990493,17267.9%
Oct 7, 2026176,496400281,11762.8%
Oct 6, 2026259,9010349,36674.4%
Oct 5, 2026183,4830410,90744.7%
Oct 2, 2026323,9900574,57856.4%
Oct 1, 2026142,1800292,55948.6%

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 CLYM
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T21,186,48328,019823,9964,88059.0%
Sep 28, 2026T21,290,65331,8171,022,3284,98955.8%
Sep 21, 2026T21,573,13526,1831,648,7707,28548.8%
Sep 14, 2026T21,979,83535,1481,542,5075,43156.2%
Sep 7, 2026T21,525,33531,095706,4115,48668.3%
Aug 31, 2026T24,062,59853,2312,108,9259,28065.8%
Aug 24, 2026T21,592,37234,2361,016,7705,29461.0%
Aug 17, 2026T21,541,55333,180829,3585,23465.0%
Aug 10, 2026T22,525,73132,701954,3134,61872.6%
Aug 3, 2026T21,177,38123,366663,7804,16963.9%
Jul 27, 2026T21,212,17921,860751,3613,88961.7%
Jul 20, 2026T21,078,00717,978605,1343,60364.0%