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Livermore
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Blackbaud Inc

BLKB
Exchange
Nasdaq
Industry
Services-Prepackaged Software
SEC CIK
0001280058

In the last 90 days, Blackbaud Inc insiders filed 0 open-market purchases and 4 sales; 283 institutions reported holding it in 13F filings for Q2 2026, worth $1.47B 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
2.62M
Shares, settlement Oct 30, 2026
Change
−767.1K
−22.7% vs. Oct 15, 2026
Days to cover
4.98
Short interest ÷ average daily volume
Average daily volume
525.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 598,515 sharesNov 15, 2024: 636,512 sharesNov 29, 2024: 657,843 sharesDec 13, 2024: 613,174 sharesDec 31, 2024: 584,421 sharesJan 15, 2025: 611,628 sharesJan 31, 2025: 559,196 sharesFeb 14, 2025: 570,105 sharesFeb 28, 2025: 717,583 sharesMar 14, 2025: 940,462 sharesMar 31, 2025: 932,001 sharesApr 15, 2025: 1,008,134 sharesApr 30, 2025: 1,029,877 sharesMay 15, 2025: 1,075,664 sharesMay 30, 2025: 1,156,503 sharesJun 13, 2025: 1,227,495 sharesJun 30, 2025: 1,033,533 sharesJul 15, 2025: 939,543 sharesJul 31, 2025: 877,277 sharesAug 15, 2025: 1,139,063 sharesAug 29, 2025: 1,170,369 sharesSep 15, 2025: 1,157,170 sharesSep 30, 2025: 1,168,254 sharesOct 15, 2025: 1,479,193 sharesOct 31, 2025: 1,517,815 sharesNov 14, 2025: 1,527,041 sharesNov 28, 2025: 1,308,949 sharesDec 15, 2025: 1,347,511 sharesDec 31, 2025: 1,166,506 sharesJan 15, 2026: 1,283,175 sharesJan 30, 2026: 1,192,397 sharesFeb 13, 2026: 1,868,069 sharesFeb 27, 2026: 1,656,375 sharesMar 13, 2026: 1,888,251 sharesMar 31, 2026: 2,457,902 sharesApr 15, 2026: 2,499,859 sharesApr 30, 2026: 3,035,886 sharesMay 15, 2026: 3,636,064 sharesMay 29, 2026: 3,940,065 sharesJun 15, 2026: 4,190,151 sharesJun 30, 2026: 5,197,712 sharesJul 15, 2026: 4,836,903 sharesJul 31, 2026: 4,179,024 sharesAug 14, 2026: 3,595,180 sharesAug 31, 2026: 3,667,406 sharesSep 15, 2026: 3,667,985 sharesSep 30, 2026: 3,369,458 sharesOct 15, 2026: 3,386,640 sharesOct 30, 2026: 2,619,541 shares
Short interest in BLKB by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20262.62M−767.1K−22.7%525.6K4.98
Oct 15, 20263.39M+17.2K+0.5%423.7K7.99
Sep 30, 20263.37M−298.5K−8.1%489.7K6.88
Sep 15, 20263.67M+5790.0%355.5K10.32
Aug 31, 20263.67M+72.2K+2.0%388.9K9.43
Aug 14, 20263.60M−583.8K−14.0%559.9K6.42
Jul 31, 20264.18M−657.9K−13.6%860.6K4.86
Jul 15, 20264.84M−360.8K−6.9%561.7K8.61
Jun 30, 20265.20M+1.01M+24.1%1.44M3.61
Jun 15, 20264.19M+250.1K+6.4%702.6K5.96
May 29, 20263.94M+304.0K+8.4%752.0K5.24
May 15, 20263.64M+600.2K+19.8%622.5K5.84
Apr 30, 20263.04M+536.0K+21.4%587.8K5.16
Apr 15, 20262.50M+42.0K+1.7%580.0K4.31
Mar 31, 20262.46M+569.7K+30.2%614.8K4.00
Mar 13, 20261.89M+231.9K+14.0%484.1K3.90
Feb 27, 20261.66M−211.7K−11.3%574.7K2.88
Feb 13, 20261.87M+675.7K+56.7%686.3K2.72
Jan 30, 20261.19M−90.8K−7.1%345.6K3.45
Jan 15, 20261.28M+116.7K+10.0%307.6K4.17
Dec 31, 20251.17M−181.0K−13.4%282.1K4.14
Dec 15, 20251.35M+38.6K+3.0%371.0K3.63
Nov 28, 20251.31M−218.1K−14.3%334.1K3.92
Nov 14, 20251.53M+9.23K+0.6%431.4K3.54
Oct 31, 20251.52M+38.6K+2.6%257.5K5.89
Oct 15, 20251.48M+310.9K+26.6%248.5K5.95
Sep 30, 20251.17M+11.1K+1.0%434.5K2.69
Sep 15, 20251.16M−13.2K−1.1%282.2K4.10
Aug 29, 20251.17M+31.3K+2.8%259.7K4.51
Aug 15, 20251.14M+261.8K+29.8%411.1K2.77
Jul 31, 2025877.3K−62.3K−6.6%311.1K2.82
Jul 15, 2025939.5K−94.0K−9.1%225.2K4.17
Jun 30, 20251.03M−194.0K−15.8%401.8K2.57
Jun 13, 20251.23M+71.0K+6.1%211.3K5.81
May 30, 20251.16M+80.8K+7.5%224.6K5.15
May 15, 20251.08M+45.8K+4.5%320.7K3.35
Apr 30, 20251.03M+21.7K+2.2%272.3K3.78
Apr 15, 20251.01M+76.1K+8.2%357.4K2.82
Mar 31, 2025932.0K−8.46K−0.9%469.3K1.99
Mar 14, 2025940.5K+222.9K+31.1%426.5K2.21
Feb 28, 2025717.6K+147.5K+25.9%352.7K2.03
Feb 14, 2025570.1K+10.9K+2.0%163.6K3.48
Jan 31, 2025559.2K−52.4K−8.6%163.4K3.42
Jan 15, 2025611.6K+27.2K+4.7%144.0K4.25
Dec 31, 2024584.4K−28.8K−4.7%214.4K2.73
Dec 13, 2024613.2K−44.7K−6.8%187.3K3.27
Nov 29, 2024657.8K+21.3K+3.4%222.3K2.96
Nov 15, 2024636.5K+38.0K+6.4%286.0K2.23
Oct 31, 2024598.5K−4.83K−0.8%168.2K3.56

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 BLKB by settlement date
Settlement dateSharesPriceValue
Sep 30, 20266,976$41.43$289.0K
Sep 22, 202693$43.04$4.00K
Sep 9, 20261,200$45.26$54.3K
Sep 3, 20261,263$47.47$60.0K
Sep 1, 2026157$48.06$7.55K
Aug 31, 20262,228$48.62$108.3K
Aug 17, 202627$45.25$1.22K
Aug 10, 20261,229$45.87$56.4K
Aug 7, 20268$46.36$370.88
Jul 31, 2026132$40.08$5.29K
Jul 30, 2026207,149$42.18$8.74M
Jul 29, 202645$35.93$1.62K
Jul 28, 2026375$34.55$13.0K
Jul 27, 20262,433$32.71$79.6K
Jul 24, 20261,430$31.25$44.7K
Jul 23, 20261$30.92$30.92
Jul 16, 20261,099$31.55$34.7K
Jul 8, 202686$30.14$2.59K
Jul 7, 2026464$29.27$13.6K
Jul 6, 2026923$30.09$27.8K
Jun 29, 202631,330$29.23$915.8K
Jun 25, 202666,245$27.61$1.83M
Jun 24, 202689$26.97$2.40K
Jun 22, 202613,381$27.04$361.8K
Jun 18, 2026932$26.77$24.9K
Jun 15, 2026110$27.90$3.07K
Jun 10, 202612,318$27.86$343.2K
Jun 9, 202660$27.66$1.66K
Jun 2, 202610,892$32.74$356.6K
May 29, 2026895$30.40$27.2K

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 BLKB by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 12, 202630,7942283,85736.7%
Nov 11, 202651,321098,94551.9%
Nov 10, 202650,90424781,53262.4%
Nov 9, 202674,2260116,81463.5%
Nov 6, 2026108,372101161,35967.2%
Nov 5, 202672,98739151,28448.2%
Nov 4, 202669,2120139,61549.6%
Nov 3, 202664,273194,34268.1%
Nov 2, 202690,1210150,61759.8%
Oct 30, 202692,0480124,57973.9%
Oct 29, 2026118,6165,578182,97164.8%
Oct 28, 2026205,9924,117287,77571.6%
Oct 27, 2026118,68197179,03666.3%
Oct 26, 2026136,9494205,33566.7%
Oct 23, 2026118,5190175,62567.5%
Oct 22, 2026171,7670248,14669.2%
Oct 21, 2026176,1290258,51168.1%
Oct 20, 2026106,380227205,09451.9%
Oct 19, 2026121,6640171,88970.8%
Oct 16, 2026146,9880222,82966.0%
Oct 15, 2026234,54464371,49563.1%
Oct 14, 2026113,4510171,05666.3%
Oct 13, 2026166,6950227,09273.4%
Oct 12, 202693,3950121,03877.2%
Oct 9, 202697,7560131,29674.5%
Oct 8, 202665,022196,15967.6%
Oct 7, 202665,5790106,88061.4%
Oct 6, 202671,0760104,55068.0%
Oct 5, 2026112,14353200,99855.8%
Oct 2, 202666,0470116,29356.8%

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 BLKB
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2499,65717,330194,0614,04072.0%
Sep 28, 2026T2502,02820,700211,3284,26670.4%
Sep 21, 2026T2572,01921,739312,8514,42764.6%
Sep 14, 2026T2534,30120,760669,0283,63844.4%
Sep 7, 2026T2383,06317,623159,5143,01370.6%
Aug 31, 2026T2444,08020,596228,5523,66366.0%
Aug 24, 2026T2513,01823,399224,4124,86269.6%
Aug 17, 2026T2649,49723,024307,4084,27867.9%
Aug 10, 2026T2647,09022,988362,0264,39664.1%
Aug 3, 2026T2765,25427,298329,1806,02169.9%
Jul 27, 2026T21,952,55047,745616,0778,01176.0%
Jul 20, 2026T2847,51428,383352,0094,67170.7%