SEI INVESTMENTS CO (SEIC) — Institutional Holders, Q2 2026

579 institutional investment managers reported a SEIC position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $7.9B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← SEIC stock profile

SEIC in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

173

Trimmed

226

Sold out

Biggest buyers

Boston PartnersAdded · +1,323,752 sh+$116.1M
JANE STREET GROUPAdded · +572,501 sh+$50.2M
BARCLAYS PLCAdded · +444,238 sh+$39.0M
Azora CapitalNew · +443,189 sh+$38.9M
FMRAdded · +417,719 sh+$36.6M

Biggest sellers

MORGAN STANLEYTrimmed · -673,076 sh-$59.0M
PFA Pension, ForsikringsaktieselskabSold out · -519,311 sh-$45.5M
FRANKLIN RESOURCESTrimmed · -470,287 sh-$41.2M
Prana Capital ManagementTrimmed · -325,018 sh-$28.5M
FIRST ADVISORSTrimmed · -320,697 sh-$28.1M

SEIC 13F holders ranked 1–100 of 579

Institutional investors reporting a position in SEI INVESTMENTS CO on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 9,927,545 sh	9,927,545	$870.7M	0.01%	-1.8%
2	LOOMIS SAYLES & L P#2 · 8,482,052 sh	8,482,052	$744.0M	0.93%	-1.7%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 6,140,822 sh	6,140,822	$538.6M	0.02%	+0.2%
4	VANGUARD CAPITAL MANAGEMENT#4 · 4,686,241 sh	4,686,241	$411.0M	<0.01%	-1.2%
5	STATE STREET#5 · 4,251,584 sh	4,251,584	$372.9M	0.01%	+1.6%
6	MORGAN STANLEY#6 · 4,119,203 sh	4,119,203	$361.3M	0.02%	-14.0%
7	Boston Partners#7 · 3,093,791 sh	3,093,791	$271.4M	0.24%	+74.8%
8	GEODE CAPITAL MANAGEMENT#8 · 2,953,161 sh	2,953,161	$259.1M	0.01%	+4.3%
9	BANK OF AMERICA#9 · 2,908,071 sh	2,908,071	$255.1M	0.02%	-0.4%
10	FMR#10 · 2,510,218 sh	2,510,218	$220.2M	<0.01%	+20.0%
11	LORD, ABBETT#11 · 2,309,004 sh	2,309,004	$202.5M	0.58%	+4.7%
12	DIMENSIONAL FUND ADVISORS#12 · 1,962,762 sh	1,962,762	$172.1M	0.03%	+4.8%
13	FIRST ADVISORS#13 · 1,501,972 sh	1,501,972	$131.7M	0.08%	-17.6%
14	Beutel, Goodman & Ltd.#14 · 1,494,684 sh	1,494,684	$131.1M	0.96%	-15.7%
15	Invesco Ltd.#15 · 1,110,829 sh	1,110,829	$97.4M	<0.01%	-3.0%
16	ROYCE & ASSOCIATES#16 · 1,050,287 sh	1,050,287	$92.1M	0.74%	+5.4%
17	CAISSE DE DEPOT ET PLACEMENT DU QUEBEC#17 · 1,002,445 sh	1,002,445	$87.9M	0.13%	-16.3%
18	Boston Walden#18 · 991,300 sh	991,300	$86.9M	0.66%	-4.7%
19	NORTHERN#19 · 914,907 sh	914,907	$80.2M	<0.01%	+1.0%
20	Bank of New York Mellon#20 · 894,194 sh	894,194	$78.4M	0.01%	-4.5%
21	NORGES BANK#21 · 887,116 sh	887,116	$77.8M	<0.01%	—
22	BARCLAYS PLC#22 · 825,215 sh	825,215	$72.4M	0.01%	+116.6%
23	AMERICAN CAPITAL MANAGEMENT#23 · 745,323 sh	745,323	$65.4M	2.93%	-3.0%
24	CHARLES SCHWAB INVESTMENT MANAGEMENT#24 · 695,446 sh	695,446	$61.0M	<0.01%	-0.1%
25	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#25 · 660,498 sh	660,498	$57.9M	0.03%	+16.3%
26	Clark Capital Management Group#26 · 638,934 sh	638,934	$56.0M	0.31%	-23.7%
27	VANGUARD FIDUCIARY#27 · 592,612 sh	592,612	$52.0M	0.01%	+0.4%
28	RAYMOND JAMES FINANCIAL#28 · 583,800 sh	583,800	$51.2M	0.01%	+2.0%
29	JANE STREET GROUP#29 · 578,801 sh	578,801	$50.8M	<0.01%	+9087.3%
30	AMERIPRISE FINANCIAL#30 · 578,420 sh	578,420	$50.8M	0.01%	-33.5%
31	FIRST FINANCIAL BANKSHARES#31 · 552,780 sh	552,780	$48.5M	0.91%	-0.3%
32	Quantinno Capital Management#32 · 532,381 sh	532,381	$46.7M	0.06%	+39.2%
33	VOLORIDGE INVESTMENT MANAGEMENT#33 · 518,314 sh	518,314	$45.5M	0.19%	+25.8%
34	FRANKLIN RESOURCES#34 · 512,826 sh	512,826	$45.0M	<0.01%	-47.8%
35	ENVESTNET ASSET MANAGEMENT#35 · 478,365 sh	478,365	$42.0M	<0.01%	-4.0%
36	NATIXIS ADVISORS#36 · 461,891 sh	461,891	$40.5M	0.05%	-1.7%
37	GOLDMAN SACHS GROUP#37 · 461,227 sh	461,227	$40.5M	<0.01%	+42.3%
38	Azora Capital#38 · 443,189 sh	443,189	$38.9M	1.64%	New
39	Connor, Clark & Lunn Investment Management Ltd.#39 · 421,046 sh	421,046	$36.9M	0.07%	+22.9%
40	JPMORGAN CHASE#40 · 375,392 sh	375,392	$32.9M	<0.01%	-18.7%
41	AQR CAPITAL MANAGEMENT#41 · 334,349 sh	334,349	$29.3M	0.01%	-20.4%
42	THRIVENT FINANCIAL FOR LUTHERANS#42 · 324,567 sh	324,567	$28.5M	0.05%	-0.3%
43	ProShare Advisors#43 · 319,375 sh	319,375	$28.0M	0.04%	+6.2%
44	Arbejdsmarkedets Tillaegspension#44 · 313,600 sh	313,600	$27.5M	0.60%	-3.0%
45	BALYASNY ASSET MANAGEMENT L.P.#45 · 308,050 sh	308,050	$27.0M	0.03%	+36.5%
46	UBS Group AG#46 · 307,430 sh	307,430	$27.0M	<0.01%	-2.9%
47	RHUMBLINE ADVISERS#47 · 303,552 sh	303,552	$26.6M	0.02%	-1.9%
48	PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO#48 · 300,935 sh	300,935	$26.4M	0.09%	+37.0%
49	RENAISSANCE TECHNOLOGIES#49 · 284,726 sh	284,726	$25.0M	0.03%	-28.8%
50	VICTORY CAPITAL MANAGEMENT#50 · 269,995 sh	269,995	$23.7M	0.01%	-36.9%
51	MILLENNIUM MANAGEMENT#51 · 266,217 sh	266,217	$23.3M	<0.01%	+124.2%
52	JLB & ASSOCIATES#52 · 261,576 sh	261,576	$22.9M	3.07%	+0.9%
53	Retirement Systems of Alabama#53 · 253,332 sh	253,332	$22.2M	0.07%	-7.1%
54	Rockefeller Capital Management L.P.#54 · 228,023 sh	228,023	$20.0M	0.03%	+49.5%
55	Toroso Investments#55 · 226,700 sh	226,700	$19.9M	0.03%	+40.4%
56	Interval Partners#56 · 226,022 sh	226,022	$19.8M	0.51%	+65.9%
57	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#57 · 216,054 sh	216,054	$19.0M	<0.01%	-52.6%
58	PRINCIPAL FINANCIAL GROUP#58 · 207,644 sh	207,644	$18.2M	<0.01%	0.0%
59	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#59 · 205,471 sh	205,471	$18.0M	0.01%	+3.5%
60	Swiss National Bank#60 · 202,400 sh	202,400	$17.8M	<0.01%	-1.7%
61	ALPS ADVISORS#61 · 201,072 sh	201,072	$17.6M	0.08%	-6.0%
62	Crestwood Advisors Group#62 · 197,095 sh	197,095	$17.3M	0.26%	+0.4%
63	Amundi#63 · 193,135 sh	193,135	$16.9M	<0.01%	+2.4%
64	Nuveen#64 · 185,536 sh	185,536	$16.3M	<0.01%	+5.9%
65	Leith Wheeler Investment Counsel Ltd.#65 · 174,506 sh	174,506	$15.3M	1.16%	-11.1%
66	MARKEL GROUP#66 · 173,200 sh	173,200	$15.2M	0.12%	0.0%
67	ROYAL BANK OF CANADA#67 · 161,039 sh	161,039	$14.1M	<0.01%	-61.3%
68	BI Asset Management Fondsmaeglerselskab A/S#68 · 160,582 sh	160,582	$14.1M	—	+127.9%
69	Foyston, Gordon, & Payne#69 · 157,958 sh	157,958	$13.9M	2.98%	+0.1%
70	LPL Financial#70 · 156,953 sh	156,953	$13.8M	<0.01%	-5.9%
71	Bridgewater Associates#71 · 144,423 sh	144,423	$12.7M	0.05%	-37.9%
72	OSAIC#72 · 141,682 sh	141,682	$12.4M	0.01%	-6.6%
73	Prana Capital Management#73 · 139,223 sh	139,223	$12.2M	0.37%	-70.0%
74	Legal & General Group Plc#74 · 136,376 sh	136,376	$12.0M	<0.01%	-27.7%
75	WELLS FARGO & COMPANY#75 · 130,780 sh	130,780	$11.5M	<0.01%	+16.2%
76	KLP KAPITALFORVALTNING AS#76 · 127,800 sh	127,800	$11.2M	0.04%	0.0%
77	WEALTH ENHANCEMENT ADVISORY SERVICES#77 · 119,448 sh	119,448	$11.1M	—	+813.6%
78	TWO SIGMA INVESTMENTS#78 · 118,660 sh	118,660	$10.4M	<0.01%	+518.0%
79	BANK OF MONTREAL#79 · 116,432 sh	116,432	$10.2M	<0.01%	+2.7%
80	KING LUTHER CAPITAL MANAGEMENT#80 · 111,077 sh	111,077	$9.7M	0.04%	+1.6%
81	ALLIANCEBERNSTEIN L.P.#81 · 119,244 sh	119,244	$9.4M	<0.01%	-5.7%
82	TRUIST FINANCIAL#82 · 106,452 sh	106,452	$9.3M	0.01%	-3.8%
83	Fideuram Asset Management (Ireland) dac#83 · 113,187 sh	113,187	$9.1M	0.17%	New
84	STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM#84 · 103,180 sh	103,180	$9.0M	0.01%	-5.4%
85	VAN ECK ASSOCIATES#85 · 102,923 sh	102,923	$9.0M	<0.01%	-3.1%
86	Corient Private Wealth#86 · 102,534 sh	102,534	$9.0M	0.01%	+11.1%
87	VANGUARD ASSET MANAGEMENT, Ltd#87 · 101,909 sh	101,909	$8.9M	<0.01%	+13.2%
88	NEW YORK STATE TEACHERS RETIREMENT SYSTEM#88 · 101,601 sh	101,601	$8.9M	—	-6.4%
89	AMERICAN CENTURY COMPANIES#89 · 101,518 sh	101,518	$8.9M	<0.01%	+6.6%
90	Kathmere Capital Management#90 · 100,611 sh	100,611	$8.8M	—	+1.1%
91	STIFEL FINANCIAL#91 · 99,780 sh	99,780	$8.8M	<0.01%	-1.4%
92	PRICE T ROWE ASSOCIATES#92 · 97,931 sh	97,931	$8.6M	<0.01%	+6.6%
93	Creative Planning#93 · 95,983 sh	95,983	$8.4M	<0.01%	-17.8%
94	CITIGROUP#94 · 93,051 sh	93,051	$8.2M	<0.01%	+174.1%
95	CITADEL ADVISORS#95 · 92,433 sh	92,433	$8.1M	<0.01%	+120.2%
96	Schonfeld Strategic Advisors#96 · 90,061 sh	90,061	$7.9M	0.03%	+55.6%
97	Karl Kapital#97 · 88,816 sh	88,816	$7.8M	4.64%	+23.1%
98	Man Group plc#98 · 87,503 sh	87,503	$7.7M	0.01%	-75.8%
99	Horizon Investments#99 · 86,966 sh	86,966	$7.6M	0.08%	+2701.7%
100	Universal- Beteiligungs- und Servicegesellschaft mbH#100 · 85,026 sh	85,026	$7.5M	0.01%	+38.7%

Funds that sold out of SEIC in Q2 2026 (62)

Held SEIC at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held SEIC in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
PFA Pension, Forsikringsaktieselskab519,311 sh	519,311	$40.8M
Qube Research & Technologies Ltd124,992 sh	124,992	$9.8M
APG Asset Management N.V.54,829 sh	54,829	$3.7M
Allianz Asset Management GmbH45,291 sh	45,291	$3.6M
Inspire Investing43,655 sh	43,655	$3.4M
SMITHBRIDGE ASSET MANAGEMENT26,201 sh	26,201	$2.1M
BANK OF NOVA SCOTIA26,171 sh	26,171	$2.1M
DIVERSIFY WEALTH MANAGEMENT13,551 sh	13,551	$1.2M
Headlands Technologies15,462 sh	15,462	$1.2M
Elo Mutual Pension Insurance15,328 sh	15,328	$1.2M
NOVEM GROUP13,101 sh	13,101	$1.0M
Mariner11,603 sh	11,603	$910.4K
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.10,925 sh	10,925	$857.3K
Verition Fund Management10,272 sh	10,272	$806.0K
DANSKE BANK A/S8,987 sh	8,987	$705.2K
Point72 Asset Management, L.P.8,605 sh	8,605	$675.2K
Inspire Advisors7,942 sh	7,942	$623.2K
FORA Capital7,416 sh	7,416	$581.6K
Ameritas Advisory Services7,167 sh	7,167	$562.4K
Advisors Preferred6,571 sh	6,571	$515.6K
Odyssean6,482 sh	6,482	$508.6K
Haverford6,250 sh	6,250	$490.4K
Procyon Advisors5,909 sh	5,909	$463.7K
Polymer Capital Management (US)5,049 sh	5,049	$396.2K
AXQ CAPITAL4,916 sh	4,916	$385.8K
OMERS ADMINISTRATION4,666 sh	4,666	$366.1K
EntryPoint Capital4,661 sh	4,661	$365.7K
Private Advisor Group4,257 sh	4,257	$334.0K
Blackstone3,753 sh	3,753	$294.5K
CAPSTONE INVESTMENT ADVISORS3,551 sh	3,551	$278.6K
GREENLEAF3,422 sh	3,422	$268.5K
MAIRS & POWER3,300 sh	3,300	$259.0K
Alliance Wealth Advisors3,179 sh	3,179	$249.5K
Korea Investment3,172 sh	3,172	$248.9K
NBT BANK N A3,081 sh	3,081	$241.8K
OpenArc Corporate Advisory2,728 sh	2,728	$214.1K
NORDEN GROUP2,712 sh	2,712	$212.8K
Altar Rock2,603 sh	2,603	$204.3K
Dorsey & Whitney2,551 sh	2,551	$200.2K
Front Street Capital Management1,330 sh	1,330	$104.0K
Annis Gardner Whiting Capital Advisors1,324 sh	1,324	$103.9K
Advisory Services Network1,061 sh	1,061	$83.2K
Ancora Advisors808 sh	808	$63.4K
Innovative Asset Advisors Group741 sh	741	$58.1K
Western Wealth Management552 sh	552	$43.3K
Root Financial Partners487 sh	487	$38.2K
V-Square Quantitative Management321 sh	321	$25.2K
Asset Dedication320 sh	320	$25.1K
Intentional Wealth Strategies199 sh	199	$15.6K
TWIN PEAKS WEALTH ADVISORS125 sh	125	$9.8K
Clearstead69 sh	69	$5.4K
Crewe Advisors46 sh	46	$3.6K
Raleigh Capital Management40 sh	40	$3.2K
United Financial Planning Group33 sh	33	$2.6K
Operose Advisors19 sh	19	$1.5K
Harvest Fund Management , Ltd13 sh	13	$1.0K
Winthrop Capital Management19 sh	19	$1.0K
Vermillion Wealth Management7 sh	7	$549.00
Manchester Capital Management5 sh	5	$393.00
TopTier Wealth Management3 sh	3	$235.00
CURIO WEALTH2 sh	2	$157.00
Caitong International Asset Management , Ltd1 sh	1	$78.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.