ICON PLC (ICLR) — Institutional Holders, Q2 2026

426 institutional investment managers reported a ICLR position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $13.9B. 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.

← ICLR stock profile

ICLR 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

145

Trimmed

138

Sold out

Biggest buyers

Invesco Ltd.Added · +1,385,367 sh+$240.7M
GREENHAVEN ASSOCIATESAdded · +1,098,204 sh+$190.8M
FMRAdded · +1,097,315 sh+$190.6M
AMERIPRISE FINANCIALAdded · +877,359 sh+$152.4M
Maple Rock Capital PartnersAdded · +864,300 sh+$150.1M

Biggest sellers

Madison Avenue PartnersSold out · -1,282,838 sh-$222.8M
Holocene AdvisorsSold out · -840,845 sh-$146.1M
SOUND SHORE MANAGEMENTSold out · -626,958 sh-$108.9M
MASSACHUSETTS FINANCIAL SERVICESTrimmed · -622,653 sh-$108.2M
WELLINGTON MANAGEMENT GROUP LLPTrimmed · -592,983 sh-$103.0M

ICLR 13F holders ranked 1–100 of 426

Institutional investors reporting a position in ICON PLC on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	Artisan Partners Limited Partnership#1 · 8,636,406 sh	8,636,406	$1.5B	2.38%	+4.3%
2	WELLINGTON MANAGEMENT GROUP LLP#2 · 5,320,054 sh	5,320,054	$924.1M	0.16%	-10.0%
3	FMR#3 · 5,271,321 sh	5,271,321	$915.7M	0.04%	+26.3%
4	Invesco Ltd.#4 · 5,264,236 sh	5,264,236	$914.5M	0.07%	+35.7%
5	HARRIS ASSOCIATES L P#5 · 4,468,146 sh	4,468,146	$776.2M	1.03%	+2.7%
6	Brave Warrior Advisors#6 · 3,153,308 sh	3,153,308	$547.8M	11.94%	+5.2%
7	GREENHAVEN ASSOCIATES#7 · 3,100,615 sh	3,100,615	$538.6M	—	+54.8%
8	PRINCIPAL FINANCIAL GROUP#8 · 2,950,974 sh	2,950,974	$512.6M	0.25%	-10.9%
9	MASSACHUSETTS FINANCIAL SERVICES#9 · 2,105,171 sh	2,105,171	$369.4M	0.12%	-22.8%
10	Ruane, Cunniff & Goldfarb L.P.#10 · 2,048,087 sh	2,048,087	$355.8M	5.54%	+25.3%
11	Boston Partners#11 · 1,620,730 sh	1,620,730	$281.4M	0.25%	+94.1%
12	Trinity Street Asset Management LLP#12 · 1,535,462 sh	1,535,462	$266.7M	—	+27.1%
13	D. E. Shaw#13 · 1,357,143 sh	1,357,143	$235.7M	0.11%	+13.2%
14	DIMENSIONAL FUND ADVISORS#14 · 1,270,230 sh	1,270,230	$220.6M	0.04%	+61.0%
15	EARNEST PARTNERS#15 · 1,242,639 sh	1,242,639	$215.9M	0.78%	+40.3%
16	Maple Rock Capital Partners#16 · 1,199,600 sh	1,199,600	$208.4M	4.09%	+257.8%
17	1832 Asset Management L.P.#17 · 1,194,860 sh	1,194,860	$207.6M	0.10%	+0.1%
18	BRANDES INVESTMENT PARTNERS#18 · 1,185,774 sh	1,185,774	$206.0M	1.44%	-17.4%
19	Capital World Investors#19 · 1,106,056 sh	1,106,056	$192.1M	0.02%	+0.1%
20	AMERIPRISE FINANCIAL#20 · 979,596 sh	979,596	$170.2M	0.03%	+858.2%
21	VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.#21 · 961,665 sh	961,665	$167.1M	1.28%	+4.7%
22	SEI INVESTMENTS#22 · 902,185 sh	902,185	$156.7M	0.14%	+19.1%
23	EQUITY INVESTMENT#23 · 888,875 sh	888,875	$154.4M	2.95%	-18.9%
24	LYRICAL ASSET MANAGEMENT#24 · 881,179 sh	881,179	$153.1M	1.94%	-6.1%
25	ALLIANCEBERNSTEIN L.P.#25 · 1,378,196 sh	1,378,196	$152.5M	0.05%	+2.5%
26	NORGES BANK#26 · 820,998 sh	820,998	$142.6M	0.01%	—
27	THRIVENT FINANCIAL FOR LUTHERANS#27 · 802,415 sh	802,415	$139.4M	0.23%	+28.9%
28	FRANKLIN RESOURCES#28 · 771,084 sh	771,084	$136.2M	0.03%	-5.5%
29	Stephens Investment Management Group#29 · 720,261 sh	720,261	$125.1M	1.34%	+20.2%
30	First Pacific Advisors#30 · 606,523 sh	606,523	$105.4M	1.30%	-38.8%
31	Russell Investments Group, Ltd.#31 · 599,198 sh	599,198	$104.1M	0.09%	+16.5%
32	LAKEWOOD CAPITAL MANAGEMENT#32 · 585,200 sh	585,200	$101.7M	5.24%	-21.7%
33	UBS Group AG#33 · 546,437 sh	546,437	$94.9M	0.01%	-10.8%
34	BlackRock#34 · 534,935 sh	534,935	$92.9M	<0.01%	+29.3%
35	BANK OF AMERICA#35 · 503,099 sh	503,099	$87.4M	<0.01%	-7.4%
36	Zurich Insurance Group Ltd#36 · 481,208 sh	481,208	$83.6M	0.58%	+337.8%
37	GOLDMAN SACHS GROUP#37 · 450,717 sh	450,717	$78.3M	<0.01%	-28.5%
38	STATE STREET#38 · 437,853 sh	437,853	$76.1M	<0.01%	-4.2%
39	MORGAN STANLEY#39 · 414,192 sh	414,192	$71.9M	<0.01%	+41.3%
40	abrdn plc#40 · 394,362 sh	394,362	$68.5M	0.10%	-1.2%
41	BAMCO#41 · 376,805 sh	376,805	$65.5M	0.10%	-11.7%
42	JANE STREET GROUP#42 · 374,800 sh	374,800	$65.1M	<0.01%	New
43	HUDSON EDGE INVESTMENT PARTNERS#43 · 366,477 sh	366,477	$63.7M	8.70%	+14.9%
44	Point72 Asset Management, L.P.#44 · 365,945 sh	365,945	$63.6M	0.07%	+3610.3%
45	Woodline Partners#45 · 327,184 sh	327,184	$56.8M	0.18%	New
46	Eagle Health Investments#46 · 308,143 sh	308,143	$53.5M	8.87%	-14.0%
47	Zuckerman Investment Group#47 · 294,439 sh	294,439	$51.1M	4.33%	+4.8%
48	VOYA INVESTMENT MANAGEMENT#48 · 289,918 sh	289,918	$50.4M	0.04%	New
49	River Road Asset Management#49 · 285,137 sh	285,137	$49.5M	0.55%	-22.9%
50	CANADA PENSION PLAN INVESTMENT BOARD#50 · 246,018 sh	246,018	$42.7M	0.02%	+139.4%
51	PERRY CREEK CAPITAL#51 · 245,000 sh	245,000	$42.6M	19.48%	0.0%
52	CIBC Bancorp USA#52 · 231,237 sh	231,237	$40.2M	0.05%	+1.0%
53	Legal & General Group Plc#53 · 229,796 sh	229,796	$39.9M	<0.01%	+31.0%
54	Hyperion Capital Advisors#54 · 224,665 sh	224,665	$39.0M	17.60%	+57.7%
55	BROWN ADVISORY#55 · 202,339 sh	202,339	$35.1M	0.05%	+16.7%
56	DIAMOND HILL CAPITAL MANAGEMENT#56 · 194,618 sh	194,618	$33.8M	0.27%	-11.7%
57	ROYAL BANK OF CANADA#57 · 194,040 sh	194,040	$33.7M	<0.01%	+26.2%
58	RAYMOND JAMES FINANCIAL#58 · 191,976 sh	191,976	$33.3M	<0.01%	-26.6%
59	KENSICO CAPITAL MANAGEMENT#59 · 188,000 sh	188,000	$32.7M	0.56%	New
60	MARSHALL WACE, LLP#60 · 175,440 sh	175,440	$30.5M	0.02%	+1121.1%
61	PRICE T ROWE ASSOCIATES#61 · 153,981 sh	153,981	$26.7M	<0.01%	New
62	Fisher Funds Management LTD#62 · 149,726 sh	149,726	$26.0M	—	-14.1%
63	CITADEL ADVISORS#63 · 148,573 sh	148,573	$25.8M	<0.01%	-41.0%
64	Stanley Capital Management#64 · 140,160 sh	140,160	$24.3M	3.23%	+40.2%
65	PFM Health Sciences#65 · 136,482 sh	136,482	$23.7M	2.03%	+137.4%
66	Parkwood#66 · 134,842 sh	134,842	$23.4M	1.68%	New
67	Eldred Rock Partners#67 · 134,248 sh	134,248	$23.3M	—	-0.2%
68	ENVESTNET ASSET MANAGEMENT#68 · 133,841 sh	133,841	$23.2M	<0.01%	-7.9%
69	NEW YORK STATE COMMON RETIREMENT FUND#69 · 122,943 sh	122,943	$21.4M	0.03%	-64.4%
70	Foresight Group Ltd Liability Partnership#70 · 119,181 sh	119,181	$20.6M	3.71%	+47.8%
71	Polar Capital Plc#71 · 116,939 sh	116,939	$20.3M	0.05%	+16.4%
72	Corient Private Wealth#72 · 114,826 sh	114,826	$19.9M	0.03%	-0.4%
73	Vident Advisory#73 · 114,280 sh	114,280	$19.9M	0.14%	+4.8%
74	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#74 · 113,407 sh	113,407	$19.7M	0.01%	-5.7%
75	CHARLES SCHWAB INVESTMENT MANAGEMENT#75 · 106,275 sh	106,275	$18.5M	<0.01%	+21.6%
76	FRONTIER CAPITAL MANAGEMENT#76 · 104,335 sh	104,335	$18.1M	0.17%	-3.8%
77	GEODE CAPITAL MANAGEMENT#77 · 98,639 sh	98,639	$17.1M	<0.01%	+2.9%
78	Oribel Capital Management#78 · 98,100 sh	98,100	$17.0M	0.52%	New
79	BANK OF MONTREAL#79 · 97,601 sh	97,601	$17.0M	<0.01%	+1.2%
80	TEACHER RETIREMENT SYSTEM OF TEXAS#80 · 97,118 sh	97,118	$16.9M	0.05%	New
81	Sio Capital Management#81 · 88,186 sh	88,186	$15.3M	2.54%	-71.2%
82	Distillate Capital Partners#82 · 86,720 sh	86,720	$15.1M	0.78%	-43.6%
83	STATE TREASURER STATE OF MICHIGAN#83 · 85,070 sh	85,070	$14.8M	—	0.0%
84	Sone Capital Management#84 · 83,333 sh	83,333	$14.5M	1.10%	New
85	FARMERS & MERCHANTS INVESTMENTS#85 · 82,928 sh	82,928	$14.4M	—	-0.1%
86	PARTHENON#86 · 78,653 sh	78,653	$13.7M	—	-0.7%
87	Leith Wheeler Investment Counsel Ltd.#87 · 75,794 sh	75,794	$13.2M	1.00%	-6.9%
88	Handelsbanken Fonder AB#88 · 71,817 sh	71,817	$12.5M	0.04%	+463.8%
89	WELLS FARGO & COMPANY#89 · 69,698 sh	69,698	$12.1M	<0.01%	-5.0%
90	FIRETRAIL INVESTMENTS PTY LTD#90 · 69,624 sh	69,624	$12.0M	3.39%	+20.8%
91	MUHLENKAMP#91 · 66,337 sh	66,337	$11.5M	3.34%	+0.5%
92	Arvin Capital Management#92 · 64,820 sh	64,820	$11.3M	1.47%	New
93	VANGUARD CAPITAL MANAGEMENT#93 · 62,839 sh	62,839	$10.9M	<0.01%	+7.2%
94	Khrom Capital Management#94 · 61,900 sh	61,900	$10.8M	0.90%	New
95	Schonfeld Strategic Advisors#95 · 54,575 sh	54,575	$9.5M	0.03%	+10.0%
96	Verition Fund Management#96 · 53,631 sh	53,631	$9.3M	0.01%	+26.7%
97	GATEWAY INVESTMENT ADVISERS#97 · 53,557 sh	53,557	$9.3M	—	-7.4%
98	BNP Paribas Asset Management Holding S.A.#98 · 52,381 sh	52,381	$9.1M	<0.01%	+1.6%
99	OSBORNE PARTNERS CAPITAL MANAGEMENT#99 · 48,671 sh	48,671	$8.5M	0.47%	-2.2%
100	MILLENNIUM MANAGEMENT#100 · 48,483 sh	48,483	$8.4M	<0.01%	-4.5%

Funds that sold out of ICLR in Q2 2026 (79)

Held ICLR 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 ICLR in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Madison Avenue Partners1,282,838 sh	1,282,838	$142.0M
Holocene Advisors840,845 sh	840,845	$93.0M
SOUND SHORE MANAGEMENT626,958 sh	626,958	$69.4M
Impactive Capital450,540 sh	450,540	$49.9M
Walleye Capital196,571 sh	196,571	$21.8M
Soleus Capital Management, L.P.192,000 sh	192,000	$21.2M
BROWN CAPITAL MANAGEMENT158,018 sh	158,018	$17.5M
Philosophy Capital Management111,015 sh	111,015	$12.3M
Running Oak Capital108,647 sh	108,647	$12.0M
AVIVA PLC106,512 sh	106,512	$11.8M
KINGDON CAPITAL MANAGEMENT, L.L.C.105,300 sh	105,300	$11.7M
Steamboat Capital Partners100,299 sh	100,299	$11.1M
Meridiem Capital Partners93,878 sh	93,878	$10.4M
CAMBIAR INVESTORS87,045 sh	87,045	$9.6M
Eversept Partners68,688 sh	68,688	$7.6M
ARMISTICE CAPITAL60,268 sh	60,268	$6.7M
Marks Group Wealth Management50,201 sh	50,201	$5.6M
DKRT Investments50,000 sh	50,000	$5.5M
Hudson Bay Capital Management36,000 sh	36,000	$4.0M
Quinn Opportunity Partners35,000 sh	35,000	$3.9M
Motley Fool Wealth Management34,319 sh	34,319	$3.8M
Swedbank AB32,150 sh	32,150	$3.6M
TWO SIGMA INVESTMENTS28,934 sh	28,934	$3.2M
Militia Capital Management22,800 sh	22,800	$2.5M
Heights Point Management21,700 sh	21,700	$2.4M
AMERICAN FINANCIAL GROUP20,000 sh	20,000	$2.2M
Quantitative Investment Management19,762 sh	19,762	$2.2M
Fund 1 Investments19,527 sh	19,527	$2.2M
Skylands Capital19,300 sh	19,300	$2.1M
Rangeley Capital17,700 sh	17,700	$2.0M
Avidity Partners Management16,000 sh	16,000	$1.9M
Kerrisdale Advisers15,646 sh	15,646	$1.7M
Grandeur Peak Global Advisors13,967 sh	13,967	$1.5M
MAVERICK CAPITAL LTD13,887 sh	13,887	$1.5M
HEALTHCARE OF ONTARIO PENSION PLAN FUND13,112 sh	13,112	$1.5M
Entropy Technologies12,816 sh	12,816	$1.4M
FIRST MANHATTAN10,055 sh	10,055	$1.1M
SkyView Investment Advisors6,387 sh	6,387	$707.0K
Vise Technologies3,632 sh	3,632	$661.8K
OneDigital Investment Advisors4,672 sh	4,672	$517.0K
Diametric Capital3,753 sh	3,753	$415.3K
GFS Advisors6,700 sh	6,700	$322.8K
Snowden Capital Advisors2,841 sh	2,841	$314.4K
GSA CAPITAL PARTNERS LLP2,485 sh	2,485	$275.0K
BayBridge Capital Group1,410 sh	1,410	$256.9K
OVERSEA-CHINESE BANKING Ltd2,162 sh	2,162	$239.2K
T3 Companies2,000 sh	2,000	$221.3K
Ground Swell Capital1,885 sh	1,885	$208.6K
L. Roy Papp & Associates, LLP1,864 sh	1,864	$206.3K
NATURAL INVESTMENTS1,829 sh	1,829	$202.0K
ABS Direct Equity Fund1,800 sh	1,800	$201.5K
Headlands Technologies1,808 sh	1,808	$200.1K
Advisory Services Network1,366 sh	1,366	$151.2K
SIMPLEX TRADING1,366 sh	1,366	$151.2K
SG Americas Securities1,152 sh	1,152	$127.0K
QUADRANT CAPITAL GROUP864 sh	864	$96.8K
STANCE CAPITAL600 sh	600	$66.4K
Bank of New Hampshire282 sh	282	$31.2K
Boreal Capital Management160 sh	160	$17.7K
MassMutual Private Wealth & , FSB144 sh	144	$15.9K
MBM WEALTH CONSULTANTS120 sh	120	$13.3K
Compagnie Lombard Odier SCmA110 sh	110	$12.2K
Transce3nd45 sh	45	$5.0K
Root Financial Partners26 sh	26	$2.9K
Ancora Advisors20 sh	20	$2.2K
Innovative Asset Advisors Group19 sh	19	$2.1K
ST GERMAIN D J11 sh	11	$1.2K
Western Wealth Management11 sh	11	$1.2K
Key FInancial10 sh	10	$1.1K
Merrithew & Thorsten14 sh	14	$1.0K
Golden State Wealth Management7 sh	7	$775.00
Vermillion Wealth Management3 sh	3	$332.00
CENTRAL2 sh	2	$222.00
TopTier Wealth Management2 sh	2	$221.00
PROSPERITY BANCSHARES1 sh	1	$111.00
True Wealth Design1 sh	1	$111.00
CURIO WEALTH1 sh	1	$111.00
Godfrey Financial Associates1 sh	1	$111.00
NISA INVESTMENT ADVISORS1 sh	1	$111.00

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.