ROG US Equity

ROGERS CORP

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Materials · Plastic Materials, Synth Resins & Nonvulcan Elastomers · CIK 84748 · FYE 1231

$119.18

-10.14 (-7.84%)

USD · as of 2026-07-28 · marketstack

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Institutional ownership· 13F filers holding ROG · 2026-Q1 methodology → sources →

256 holders

% of shares outstanding held

93.6%

Shares held (13F)

16,704,556

Reporting holders

256

Top holders

largest 100 of 256 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	3,311,9193.3M	$355M	18.56%	—
2	Capital Research Global Investors	1,519,0401.5M	$163M	8.51%	—
3	VANGUARD PORTFOLIO MANAGEMENT LLC	1,348,2811.3M	$145M	7.55%	NEW†
4	VANGUARD CAPITAL MANAGEMENT LLC	798,204798,204	$86M	4.47%	NEW†
5	DIMENSIONAL FUND ADVISORS LP	720,803720,803	$77M	4.04%	TRIM -9%
6	STATE STREET CORP	704,968704,968	$76M	3.95%	TRIM -4%
7	Starboard Value LP	584,328584,328	$63M	3.27%	TRIM -51%
8	ACK Asset Management LLC	475,000475,000	$51M	2.66%	ADD 9%
9	Clearline Capital LP	468,423468,423	$50M	2.62%	—
10	GEODE CAPITAL MANAGEMENT, LLC	423,767423,767	$45M	2.37%	ADD 3%
11	MORGAN STANLEY	321,737321,737	$35M	1.80%	ADD 10%
12	AMERIPRISE FINANCIAL INC	307,134307,134	$33M	1.72%	ADD 54%
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	277,378277,378	$30M	1.55%	—
14	NEUBERGER BERMAN GROUP LLC	261,523261,523	$28M	1.47%	—
15	GOLDMAN SACHS GROUP INC	214,526214,526	$23M	1.20%	ADD 28%
16	NORTHERN TRUST CORP	193,892193,892	$21M	1.09%	ADD 4%
17	GAMCO INVESTORS, INC. ET AL	191,264191,264	$21M	1.07%	TRIM -6%
18	Atreides Management, LP	186,085186,085	$20M	1.04%	ADD 8%
19	ODDO BHF ASSET MANAGEMENT SAS	155,000155,000	$17M	0.87%	—
20	THIRD AVENUE MANAGEMENT LLC	151,025151,025	$16M	0.85%	TRIM -24%
21	Leeward Investments, LLC - MA	137,559137,559	$15M	0.77%	TRIM -3%
22	Qube Research & Technologies Ltd	135,076135,076	$14M	0.76%	ADD 929%
23	Marathon Asset Management Ltd	133,809133,809	$14M	0.75%	ADD 14%
24	First Eagle Investment Management, LLC	131,818131,818	$14M	0.74%	ADD 11%
25	BANK OF AMERICA CORP /DE/	113,857113,857	$12M	0.64%	TRIM -5%
26	TWO SIGMA INVESTMENTS, LP	110,940110,940	$12M	0.62%	ADD 860%
27	VANGUARD FIDUCIARY TRUST CO	109,844109,844	$12M	0.62%	NEW
28	Bank of New York Mellon Corp	107,777107,777	$12M	0.60%	TRIM -3%
29	CITADEL ADVISORS LLC	94,73994,739	$10M	0.53%	ADD 6%
30	Invesco Ltd.	93,10993,109	$10M	0.52%	ADD 4%
31	SG Americas Securities, LLC	92,45392,453	$10M	0.52%	ADD 26%
32	Aristotle Capital Boston, LLC	91,04891,048	$10M	0.51%	ADD 5%
33	KING LUTHER CAPITAL MANAGEMENT CORP	90,88390,883	$10M	0.51%	TRIM -5%
34	JACOBS LEVY EQUITY MANAGEMENT, INC	83,72383,723	$9M	0.47%	ADD 59%
35	COOPER CREEK PARTNERS MANAGEMENT LLC	81,85081,850	$9M	0.46%	—
36	SEGALL BRYANT & HAMILL, LLC	81,83581,835	$9M	0.46%	TRIM -38%
37	PRINCIPAL FINANCIAL GROUP INC	81,34881,348	$9M	0.46%	—
38	BNP PARIBAS FINANCIAL MARKETS	75,07575,075	$8M	0.42%	ADD 36%
39	Edgestream Partners, L.P.	74,89874,898	$8M	0.42%	ADD 135%
40	GABELLI FUNDS LLC	69,90069,900	$8M	0.39%	TRIM -5%
41	D. E. Shaw & Co., Inc.	63,31763,317	$7M	0.35%	TRIM -31%
42	Public Sector Pension Investment Board	59,81259,812	$6M	0.34%	ADD 3%
43	NEEDHAM INVESTMENT MANAGEMENT LLC	58,00058,000	$6M	0.32%	TRIM -3%
44	Nuveen, LLC	56,59156,591	$6M	0.32%	—
45	PINNACLE ASSOCIATES LTD	56,19356,193	$6M	0.31%	TRIM -9%
46	PRUDENTIAL FINANCIAL INC	56,08656,086	$6M	0.31%	TRIM -4%
47	UG Investment Advisers Ltd.	53,56353,563	$6M	0.30%	NEW
48	RHUMBLINE ADVISERS	51,21351,213	$5M	0.29%	—
49	AQR CAPITAL MANAGEMENT LLC	48,73748,737	$5M	0.27%	ADD 6%
50	JANE STREET GROUP, LLC	47,96047,960	$5M	0.27%	NEW
51	VICTORY CAPITAL MANAGEMENT INC	47,70147,701	$5M	0.27%	—
52	Creative Planning	43,72843,728	$5M	0.24%	ADD 22%
53	Arosa Capital Management LP	43,61243,612	$5M	0.24%	NEW
54	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	43,29143,291	$5M	0.24%	ADD 2%
55	AMERICAN CENTURY COMPANIES INC	43,26443,264	$5M	0.24%	ADD 7%
56	SEI INVESTMENTS CO	41,26241,262	$4M	0.23%	ADD 27%
57	FEDERATED HERMES, INC.	39,18939,189	$4M	0.22%	—
58	Polar Asset Management Partners Inc.	38,56938,569	$4M	0.22%	TRIM -5%
59	RAYMOND JAMES FINANCIAL INC	38,18438,184	$4M	0.21%	TRIM -6%
60	Legal & General Group Plc	37,92837,928	$4M	0.21%	TRIM -10%
61	INTECH INVESTMENT MANAGEMENT LLC	37,13637,136	$4M	0.21%	TRIM -31%
62	Man Group plc	36,60036,600	$4M	0.21%	ADD 81%
63	JPMORGAN CHASE & CO	33,50633,506	$4M	0.19%	TRIM -58%
64	Granahan Investment Management, LLC	32,86932,869	$4M	0.18%	NEW
65	Trek Financial, LLC	31,32831,328	$3M	0.18%	NEW
66	Swiss National Bank	30,30030,300	$3M	0.17%	—
67	BARCLAYS PLC	29,14529,145	$3M	0.16%	TRIM -4%
68	TRILLIUM ASSET MANAGEMENT, LLC	26,17726,177	$3M	0.15%	—
69	Linden Thomas Advisory Services, LLC	26,46026,460	$3M	0.15%	ADD 99%
70	SMA Capital LLC	25,20025,200	$3M	0.14%	NEW
71	LAZARD ASSET MANAGEMENT LLC	24,09324,093	$3M	0.13%	ADD 15%
72	Aventail Capital Group, LP	23,71123,711	$3M	0.13%	NEW
73	PRICE T ROWE ASSOCIATES INC /MD/	21,01321,013	$2M	0.12%	ADD 21%
74	WESTPORT ASSET MANAGEMENT INC	20,45620,456	$2M	0.11%	—
75	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	19,60019,600	$2M	0.11%	ADD 26%
76	ALLIANCEBERNSTEIN L.P.	22,16022,160	$2M	0.12%	TRIM -7%
77	NEW YORK STATE TEACHERS RETIREMENT SYSTEM	18,78918,789	$2M	0.11%	TRIM -5%
78	DEUTSCHE BANK AG\	17,10717,107	$2M	0.10%	ADD 11%
79	HSBC HOLDINGS PLC	16,56716,567	$2M	0.09%	ADD 84%
80	Paloma Partners Management Co	16,00016,000	$2M	0.09%	NEW
81	Quantinno Capital Management LP	15,95615,956	$2M	0.09%	ADD 17%
82	ZACKS INVESTMENT MANAGEMENT	15,56715,567	$2M	0.09%	—
83	UBS Group AG	15,30815,308	$2M	0.09%	TRIM -46%
84	Schonfeld Strategic Advisors LLC	14,93614,936	$2M	0.08%	NEW
85	WINTON GROUP Ltd	14,12914,129	$2M	0.08%	TRIM -11%
86	VANGUARD ASSET MANAGEMENT, Ltd	13,85213,852	$1M	0.08%	NEW
87	SUSQUEHANNA INTERNATIONAL GROUP, LLP	13,62413,624	$1M	0.08%	TRIM -13%
88	CANADA LIFE ASSURANCE Co	13,60613,606	$1M	0.08%	TRIM -5%
89	Russell Investments Group, Ltd.	12,88012,880	$1M	0.07%	ADD 160%
90	WELLS FARGO & COMPANY/MN	12,38812,388	$1M	0.07%	TRIM -48%
91	CAPITAL FUND MANAGEMENT S.A.	12,02612,026	$1M	0.07%	ADD 8%
92	Bridgewater Associates, LP	11,51411,514	$1M	0.06%	NEW
93	Thrivent Financial for Lutherans	11,16411,164	$1M	0.06%	TRIM -3%
94	Summit Global Investments	11,09111,091	$1M	0.06%	TRIM -28%
95	Magnetar Financial LLC	10,95810,958	$1M	0.06%	NEW
96	Tidal Investments LLC	10,84910,849	$1M	0.06%	—
97	Amundi	10,51010,510	$1M	0.06%	ADD 30%
98	FMR LLC	10,39010,390	$1M	0.06%	—
99	ENVESTNET ASSET MANAGEMENT INC	10,31110,311	$1M	0.06%	ADD 4%
100	MetLife Investment Management, LLC	9,7919,791	$1M	0.05%	TRIM -5%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.3M

3.6M

3.4M

3.3M

$355M

Capital Research Global Investors

—

1.2M

1.5M

$163M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

1.3M

$145M

VANGUARD CAPITAL MANAGEMENT LLC

—

798K

$86M

DIMENSIONAL FUND ADVISORS LP

874K

914K

937K

891K

793K

721K

$77M

STATE STREET CORP

741K

707K

703K

706K

733K

705K

$76M

Starboard Value LP

804K

900K

1.7M

1.2M

584K

$63M

ACK Asset Management LLC

580K

518K

—

437K

475K

$51M

Clearline Capital LP

—

174K

299K

346K

473K

468K

$50M

GEODE CAPITAL MANAGEMENT, LLC

410K

416K

421K

413K

424K

$45M

MORGAN STANLEY

261K

216K

325K

326K

292K

322K

$35M

AMERIPRISE FINANCIAL INC

453K

432K

597K

201K

199K

307K

$33M

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

243K

254K

265K

275K

278K

277K

$30M

NEUBERGER BERMAN GROUP LLC

973K

1.0M

159K

157K

259K

262K

$28M

GOLDMAN SACHS GROUP INC

186K

137K

90K

149K

168K

215K

$23M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	256	16,704,556	93.6%	$1.8B
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · ROG

Activists — 13D, active intent

Starboard Value LP3.3%▼ -3.4ppSCHEDULE 13D/A · Amd 2 · event 2026-01-21SEC →

599,328 shares · 12 reporting persons

Large holders — 13G, passive (top 5 of 9 by % of class)

Holder	% of class	Type	As of
BlackRock, Inc.	14.7%	QII	2025-03-31	SEC →
Capital Research Global Investors	8.4%	QII	2025-12-31	SEC →
VANGUARD PORTFOLIO MANAGEMENT LLC	7.59%	QII	2026-03-31	SEC →

Institutional ownership· 13F filers holding ROG · 2026-Q1 methodology → sources →

256 holders

% of shares outstanding held

93.6%

Shares held (13F)

16,704,556

Reporting holders

256

Top holders

largest 100 of 256 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	3,311,9193.3M	$355M	18.56%	—
2	Capital Research Global Investors	1,519,0401.5M	$163M	8.51%	—
3	VANGUARD PORTFOLIO MANAGEMENT LLC	1,348,2811.3M	$145M	7.55%	NEW†
4	VANGUARD CAPITAL MANAGEMENT LLC	798,204798,204	$86M	4.47%	NEW†
5	DIMENSIONAL FUND ADVISORS LP	720,803720,803	$77M	4.04%	TRIM -9%
6	STATE STREET CORP	704,968704,968	$76M	3.95%	TRIM -4%
7	Starboard Value LP	584,328584,328	$63M	3.27%	TRIM -51%
8	ACK Asset Management LLC	475,000475,000	$51M	2.66%	ADD 9%
9	Clearline Capital LP	468,423468,423	$50M	2.62%	—
10	GEODE CAPITAL MANAGEMENT, LLC	423,767423,767	$45M	2.37%	ADD 3%
11	MORGAN STANLEY	321,737321,737	$35M	1.80%	ADD 10%
12	AMERIPRISE FINANCIAL INC	307,134307,134	$33M	1.72%	ADD 54%
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	277,378277,378	$30M	1.55%	—
14	NEUBERGER BERMAN GROUP LLC	261,523261,523	$28M	1.47%	—
15	GOLDMAN SACHS GROUP INC	214,526214,526	$23M	1.20%	ADD 28%
16	NORTHERN TRUST CORP	193,892193,892	$21M	1.09%	ADD 4%
17	GAMCO INVESTORS, INC. ET AL	191,264191,264	$21M	1.07%	TRIM -6%
18	Atreides Management, LP	186,085186,085	$20M	1.04%	ADD 8%
19	ODDO BHF ASSET MANAGEMENT SAS	155,000155,000	$17M	0.87%	—
20	THIRD AVENUE MANAGEMENT LLC	151,025151,025	$16M	0.85%	TRIM -24%
21	Leeward Investments, LLC - MA	137,559137,559	$15M	0.77%	TRIM -3%
22	Qube Research & Technologies Ltd	135,076135,076	$14M	0.76%	ADD 929%
23	Marathon Asset Management Ltd	133,809133,809	$14M	0.75%	ADD 14%
24	First Eagle Investment Management, LLC	131,818131,818	$14M	0.74%	ADD 11%
25	BANK OF AMERICA CORP /DE/	113,857113,857	$12M	0.64%	TRIM -5%
26	TWO SIGMA INVESTMENTS, LP	110,940110,940	$12M	0.62%	ADD 860%
27	VANGUARD FIDUCIARY TRUST CO	109,844109,844	$12M	0.62%	NEW
28	Bank of New York Mellon Corp	107,777107,777	$12M	0.60%	TRIM -3%
29	CITADEL ADVISORS LLC	94,73994,739	$10M	0.53%	ADD 6%
30	Invesco Ltd.	93,10993,109	$10M	0.52%	ADD 4%
31	SG Americas Securities, LLC	92,45392,453	$10M	0.52%	ADD 26%
32	Aristotle Capital Boston, LLC	91,04891,048	$10M	0.51%	ADD 5%
33	KING LUTHER CAPITAL MANAGEMENT CORP	90,88390,883	$10M	0.51%	TRIM -5%
34	JACOBS LEVY EQUITY MANAGEMENT, INC	83,72383,723	$9M	0.47%	ADD 59%
35	COOPER CREEK PARTNERS MANAGEMENT LLC	81,85081,850	$9M	0.46%	—
36	SEGALL BRYANT & HAMILL, LLC	81,83581,835	$9M	0.46%	TRIM -38%
37	PRINCIPAL FINANCIAL GROUP INC	81,34881,348	$9M	0.46%	—
38	BNP PARIBAS FINANCIAL MARKETS	75,07575,075	$8M	0.42%	ADD 36%
39	Edgestream Partners, L.P.	74,89874,898	$8M	0.42%	ADD 135%
40	GABELLI FUNDS LLC	69,90069,900	$8M	0.39%	TRIM -5%
41	D. E. Shaw & Co., Inc.	63,31763,317	$7M	0.35%	TRIM -31%
42	Public Sector Pension Investment Board	59,81259,812	$6M	0.34%	ADD 3%
43	NEEDHAM INVESTMENT MANAGEMENT LLC	58,00058,000	$6M	0.32%	TRIM -3%
44	Nuveen, LLC	56,59156,591	$6M	0.32%	—
45	PINNACLE ASSOCIATES LTD	56,19356,193	$6M	0.31%	TRIM -9%
46	PRUDENTIAL FINANCIAL INC	56,08656,086	$6M	0.31%	TRIM -4%
47	UG Investment Advisers Ltd.	53,56353,563	$6M	0.30%	NEW
48	RHUMBLINE ADVISERS	51,21351,213	$5M	0.29%	—
49	AQR CAPITAL MANAGEMENT LLC	48,73748,737	$5M	0.27%	ADD 6%
50	JANE STREET GROUP, LLC	47,96047,960	$5M	0.27%	NEW
51	VICTORY CAPITAL MANAGEMENT INC	47,70147,701	$5M	0.27%	—
52	Creative Planning	43,72843,728	$5M	0.24%	ADD 22%
53	Arosa Capital Management LP	43,61243,612	$5M	0.24%	NEW
54	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	43,29143,291	$5M	0.24%	ADD 2%
55	AMERICAN CENTURY COMPANIES INC	43,26443,264	$5M	0.24%	ADD 7%
56	SEI INVESTMENTS CO	41,26241,262	$4M	0.23%	ADD 27%
57	FEDERATED HERMES, INC.	39,18939,189	$4M	0.22%	—
58	Polar Asset Management Partners Inc.	38,56938,569	$4M	0.22%	TRIM -5%
59	RAYMOND JAMES FINANCIAL INC	38,18438,184	$4M	0.21%	TRIM -6%
60	Legal & General Group Plc	37,92837,928	$4M	0.21%	TRIM -10%
61	INTECH INVESTMENT MANAGEMENT LLC	37,13637,136	$4M	0.21%	TRIM -31%
62	Man Group plc	36,60036,600	$4M	0.21%	ADD 81%
63	JPMORGAN CHASE & CO	33,50633,506	$4M	0.19%	TRIM -58%
64	Granahan Investment Management, LLC	32,86932,869	$4M	0.18%	NEW
65	Trek Financial, LLC	31,32831,328	$3M	0.18%	NEW
66	Swiss National Bank	30,30030,300	$3M	0.17%	—
67	BARCLAYS PLC	29,14529,145	$3M	0.16%	TRIM -4%
68	TRILLIUM ASSET MANAGEMENT, LLC	26,17726,177	$3M	0.15%	—
69	Linden Thomas Advisory Services, LLC	26,46026,460	$3M	0.15%	ADD 99%
70	SMA Capital LLC	25,20025,200	$3M	0.14%	NEW
71	LAZARD ASSET MANAGEMENT LLC	24,09324,093	$3M	0.13%	ADD 15%
72	Aventail Capital Group, LP	23,71123,711	$3M	0.13%	NEW
73	PRICE T ROWE ASSOCIATES INC /MD/	21,01321,013	$2M	0.12%	ADD 21%
74	WESTPORT ASSET MANAGEMENT INC	20,45620,456	$2M	0.11%	—
75	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	19,60019,600	$2M	0.11%	ADD 26%
76	ALLIANCEBERNSTEIN L.P.	22,16022,160	$2M	0.12%	TRIM -7%
77	NEW YORK STATE TEACHERS RETIREMENT SYSTEM	18,78918,789	$2M	0.11%	TRIM -5%
78	DEUTSCHE BANK AG\	17,10717,107	$2M	0.10%	ADD 11%
79	HSBC HOLDINGS PLC	16,56716,567	$2M	0.09%	ADD 84%
80	Paloma Partners Management Co	16,00016,000	$2M	0.09%	NEW
81	Quantinno Capital Management LP	15,95615,956	$2M	0.09%	ADD 17%
82	ZACKS INVESTMENT MANAGEMENT	15,56715,567	$2M	0.09%	—
83	UBS Group AG	15,30815,308	$2M	0.09%	TRIM -46%
84	Schonfeld Strategic Advisors LLC	14,93614,936	$2M	0.08%	NEW
85	WINTON GROUP Ltd	14,12914,129	$2M	0.08%	TRIM -11%
86	VANGUARD ASSET MANAGEMENT, Ltd	13,85213,852	$1M	0.08%	NEW
87	SUSQUEHANNA INTERNATIONAL GROUP, LLP	13,62413,624	$1M	0.08%	TRIM -13%
88	CANADA LIFE ASSURANCE Co	13,60613,606	$1M	0.08%	TRIM -5%
89	Russell Investments Group, Ltd.	12,88012,880	$1M	0.07%	ADD 160%
90	WELLS FARGO & COMPANY/MN	12,38812,388	$1M	0.07%	TRIM -48%
91	CAPITAL FUND MANAGEMENT S.A.	12,02612,026	$1M	0.07%	ADD 8%
92	Bridgewater Associates, LP	11,51411,514	$1M	0.06%	NEW
93	Thrivent Financial for Lutherans	11,16411,164	$1M	0.06%	TRIM -3%
94	Summit Global Investments	11,09111,091	$1M	0.06%	TRIM -28%
95	Magnetar Financial LLC	10,95810,958	$1M	0.06%	NEW
96	Tidal Investments LLC	10,84910,849	$1M	0.06%	—
97	Amundi	10,51010,510	$1M	0.06%	ADD 30%
98	FMR LLC	10,39010,390	$1M	0.06%	—
99	ENVESTNET ASSET MANAGEMENT INC	10,31110,311	$1M	0.06%	ADD 4%
100	MetLife Investment Management, LLC	9,7919,791	$1M	0.05%	TRIM -5%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.3M

3.6M

3.4M

3.3M

$355M

Capital Research Global Investors

—

1.2M

1.5M

$163M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

1.3M

$145M

VANGUARD CAPITAL MANAGEMENT LLC

—

798K

$86M

DIMENSIONAL FUND ADVISORS LP

874K

914K

937K

891K

793K

721K

$77M

STATE STREET CORP

741K

707K

703K

706K

733K

705K

$76M

Starboard Value LP

804K

900K

1.7M

1.2M

584K

$63M

ACK Asset Management LLC

580K

518K

—

437K

475K

$51M

Clearline Capital LP

—

174K

299K

346K

473K

468K

$50M

GEODE CAPITAL MANAGEMENT, LLC

410K

416K

421K

413K

424K

$45M

MORGAN STANLEY

261K

216K

325K

326K

292K

322K

$35M

AMERIPRISE FINANCIAL INC

453K

432K

597K

201K

199K

307K

$33M

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

243K

254K

265K

275K

278K

277K

$30M

NEUBERGER BERMAN GROUP LLC

973K

1.0M

159K

157K

259K

262K

$28M

GOLDMAN SACHS GROUP INC

186K

137K

90K

149K

168K

215K

$23M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	256	16,704,556	93.6%	$1.8B
2025-Q4

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · ROG

Activists — 13D, active intent

Starboard Value LP3.3%▼ -3.4ppSCHEDULE 13D/A · Amd 2 · event 2026-01-21SEC →

599,328 shares · 12 reporting persons

Large holders — 13G, passive (top 5 of 9 by % of class)

Holder	% of class	Type	As of
BlackRock, Inc.	14.7%	QII	2025-03-31	SEC →
Capital Research Global Investors	8.4%	QII	2025-12-31	SEC →
VANGUARD PORTFOLIO MANAGEMENT LLC	7.59%	QII	2026-03-31	SEC →

ROG US Equity☆

Institutional ownership· 13F filers holding ROG · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · ROG

Institutional ownership· 13F filers holding ROG · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · ROG

ROG US Equity