There is a long list of 261 institutional holders of BLKB within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of BLKB by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-BLKB table below, the initial column indicates the name of each top institutional holder of BLKB, with a link to that fund's top holdings. The next columns indicate the amount of BLKB stock held by each of the institutional holders of BLKB, followed by the BLKB position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Clearlake Capital Group L.P.	9,751,837	$845,484	12/31/2023
BLKB	9,751,837	$845,484	12/31/2023
Vanguard Group Inc.	5,574,584	$483,316	12/31/2023
BLKB	5,574,584	$483,316	12/31/2023
BlackRock Inc.	5,549,640	$481,154	12/31/2023
BLKB	5,549,640	$481,154	12/31/2023
Morgan Stanley	4,369,130	$378,804	12/31/2023
BLKB	4,369,130	$378,804	12/31/2023
Janus Henderson Group PLC	2,787,519	$241,679	12/31/2023
BLKB	2,787,519	$241,679	12/31/2023
P2 Capital Partners LLC	1,652,939	$143,310	12/31/2023
BLKB	1,652,939	$143,310	12/31/2023
State Street Corp	1,626,908	$141,053	12/31/2023
BLKB	1,626,908	$141,053	12/31/2023
Hawk Ridge Capital Management LP	1,327,188	$115,067	12/31/2023
BLKB	1,327,188	$115,067	12/31/2023
Greenhouse Funds LLLP	1,243,651	$107,825	12/31/2023
BLKB	1,243,651	$107,825	12/31/2023
Geneva Capital Management LLC	1,060,788	$91,970	12/31/2023
BLKB	1,060,788	$91,970	12/31/2023
Dimensional Fund Advisors LP	1,028,181	$89,145	12/31/2023
BLKB	1,028,181	$89,145	12/31/2023
FMR LLC	996,830	$86,425	12/31/2023
BLKB	996,830	$86,425	12/31/2023
Geode Capital Management LLC	976,291	$84,654	12/31/2023
BLKB	976,291	$84,654	12/31/2023
Northern Trust Corp	690,399	$59,858	12/31/2023
BLKB	690,399	$59,858	12/31/2023
Van Berkom & Associates Inc.	662,639	$57,451	12/31/2023
BLKB	662,639	$57,451	12/31/2023
Palisade Capital Management LLC NJ	613,074	$53,154	12/31/2023
BLKB	613,074	$53,154	12/31/2023
Norges Bank	502,752	$43,589	12/31/2023
BLKB	502,752	$43,589	12/31/2023
American Capital Management Inc.	482,618	$41,843	12/31/2023
BLKB	482,618	$41,843	12/31/2023
Wellington Management Group LLP	456,432	$39,573	12/31/2023
BLKB	456,432	$39,573	12/31/2023
Invesco Ltd.	423,324	$36,702	12/31/2023
BLKB	423,324	$36,702	12/31/2023
Charles Schwab Investment Management Inc.	411,200	$35,651	12/31/2023
BLKB	411,200	$35,651	12/31/2023
Price T Rowe Associates Inc. MD	377,454	$32,726	12/31/2023
BLKB	377,454	$32,726	12/31/2023
Public Employees Retirement Association of Colorado	340,098	$29,486	12/31/2023
BLKB	340,098	$29,486	12/31/2023
Bank of New York Mellon Corp	386,292	$28,640	03/31/2024
BLKB	386,292	$28,640	03/31/2024
Bank of America Corp DE	317,055	$27,489	12/31/2023
BLKB	317,055	$27,489	12/31/2023
Nuveen Asset Management LLC	309,331	$26,819	12/31/2023
BLKB	309,331	$26,819	12/31/2023
First Trust Advisors LP	298,898	$25,914	12/31/2023
BLKB	298,898	$25,914	12/31/2023
California Public Employees Retirement System	285,645	$24,765	12/31/2023
BLKB	285,645	$24,765	12/31/2023
Clearbridge Investments LLC	265,396	$23,010	12/31/2023
BLKB	265,396	$23,010	12/31/2023
American Century Companies Inc.	263,491	$22,845	12/31/2023
BLKB	263,491	$22,845	12/31/2023
Ameriprise Financial Inc.	249,273	$21,611	12/31/2023
BLKB	249,273	$21,611	12/31/2023
Tributary Capital Management LLC	289,989	$21,500	03/31/2024
BLKB	289,989	$21,500	03/31/2024
Allspring Global Investments Holdings LLC	264,816	$19,633	03/31/2024
BLKB	264,816	$19,633	03/31/2024
AQR Capital Management LLC	221,606	$19,213	12/31/2023
BLKB	221,606	$19,213	12/31/2023
Becker Capital Management Inc.	184,505	$15,997	12/31/2023
BLKB	184,505	$15,997	12/31/2023
New York State Common Retirement Fund	177,630	$15,401	12/31/2023
BLKB	177,630	$15,401	12/31/2023
Principal Financial Group Inc.	171,822	$12,739	03/31/2024
BLKB	171,822	$12,739	03/31/2024
Rhumbline Advisers	141,271	$12,248	12/31/2023
BLKB	141,271	$12,248	12/31/2023
Goldman Sachs Group Inc.	140,078	$12,145	12/31/2023
BLKB	140,078	$12,145	12/31/2023
JPMorgan Chase & Co.	125,865	$10,912	12/31/2023
BLKB	125,865	$10,912	12/31/2023
Envestnet Asset Management Inc.	102,881	$8,920	12/31/2023
BLKB	102,881	$8,920	12/31/2023
Barclays PLC	99,004	$8,583	12/31/2023
BLKB	99,004	$8,583	12/31/2023
Alliancebernstein L.P.	97,214	$8,428	12/31/2023
BLKB	97,214	$8,428	12/31/2023
Public Employees Retirement System of Ohio	93,373	$8,095	12/31/2023
BLKB	93,373	$8,095	12/31/2023
Beck Bode LLC	91,352	$7,920	12/31/2023
BLKB	91,352	$7,920	12/31/2023
Fred Alger Management LLC	91,032	$7,892	12/31/2023
BLKB	91,032	$7,892	12/31/2023
Swiss National Bank	84,953	$7,365	12/31/2023
BLKB	84,953	$7,365	12/31/2023
Russell Investments Group Ltd.	81,873	$7,098	12/31/2023
BLKB	81,873	$7,098	12/31/2023
Nordea Investment Management AB	80,256	$7,033	12/31/2023
BLKB	80,256	$7,033	12/31/2023
American International Group Inc.	79,504	$6,893	12/31/2023
BLKB	79,504	$6,893	12/31/2023