FFIV US Equity

F5, INC.

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Information Technology · Computer Communications Equipment · CIK 1048695 · FYE 0930

$403.46

-4.50 (-1.10%)

USD · as of 2026-07-28 · marketstack

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

715 holders

% of shares outstanding held

99.9%

Shares held (13F)

56,354,955

Reporting holders

715

Top holders

largest 100 of 715 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	6,234,4276.2M	$1.8B	11.05%	—
2	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	4,579,3014.6M	$1.3B	8.12%	TRIM -16%
3	VANGUARD CAPITAL MANAGEMENT LLC	3,670,1413.7M	$1.1B	6.51%	NEW†
4	STATE STREET CORP	2,979,0293.0M	$862M	5.28%	TRIM -4%
5	VANGUARD PORTFOLIO MANAGEMENT LLC	2,975,5943.0M	$861M	5.27%	NEW†
6	Jericho Capital Asset Management L.P.	2,643,0132.6M	$765M	4.68%	ADD 16%
7	GEODE CAPITAL MANAGEMENT, LLC	1,742,4701.7M	$504M	3.09%	—
8	FIRST TRUST ADVISORS LP	1,476,9871.5M	$427M	2.62%	TRIM -46%
9	Invesco Ltd.	1,444,8191.4M	$418M	2.56%	TRIM -6%
10	VICTORY CAPITAL MANAGEMENT INC	1,021,5411.0M	$296M	1.81%	ADD 116%
11	LYRICAL ASSET MANAGEMENT LP	947,361947,361	$274M	1.68%	TRIM -4%
12	MORGAN STANLEY	855,907855,907	$248M	1.52%	—
13	WELLINGTON MANAGEMENT GROUP LLP	817,666817,666	$237M	1.45%	TRIM -3%
14	AMERICAN CENTURY COMPANIES INC	784,767784,767	$227M	1.39%	ADD 15%
15	AMERIPRISE FINANCIAL INC	781,535781,535	$226M	1.39%	ADD 302%
16	NORTHERN TRUST CORP	735,834735,834	$213M	1.30%	TRIM -22%
17	ALLIANCEBERNSTEIN L.P.	828,314828,314	$211M	1.47%	ADD 301%
18	AQR CAPITAL MANAGEMENT LLC	682,372682,372	$193M	1.21%	ADD 8%
19	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	649,948649,948	$188M	1.15%	ADD 18%
20	DIMENSIONAL FUND ADVISORS LP	603,086603,086	$174M	1.07%	—
21	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	582,310582,310	$168M	1.03%	TRIM -8%
22	HSBC HOLDINGS PLC	579,679579,679	$168M	1.03%	TRIM -50%
23	UBS Group AG	573,103573,103	$166M	1.02%	TRIM -44%
24	JPMORGAN CHASE & CO	571,662571,662	$160M	1.01%	ADD 127%
25	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	509,055509,055	$147M	0.90%	—
26	Legal & General Group Plc	490,494490,494	$142M	0.87%	—
27	Point72 Asset Management, L.P.	482,256482,256	$140M	0.85%	ADD 34%
28	VOYA INVESTMENT MANAGEMENT LLC	423,319423,319	$122M	0.75%	TRIM -5%
29	BNP PARIBAS FINANCIAL MARKETS	406,567406,567	$118M	0.72%	ADD 219%
30	DEUTSCHE BANK AG\	405,551405,551	$117M	0.72%	TRIM -58%
31	Bank of New York Mellon Corp	385,894385,894	$112M	0.68%	TRIM -7%
32	Junto Capital Management LP	354,177354,177	$102M	0.63%	ADD 33%
33	Robeco Institutional Asset Management B.V.	331,660331,660	$96M	0.59%	ADD 20%
34	Penserra Capital Management LLC	324,850324,850	$94M	0.58%	TRIM -18%
35	VANGUARD FIDUCIARY TRUST CO	318,122318,122	$92M	0.56%	NEW
36	Alyeska Investment Group, L.P.	310,517310,517	$90M	0.55%	TRIM -21%
37	CITADEL ADVISORS LLC	306,985306,985	$89M	0.54%	TRIM -30%
38	WESTFIELD CAPITAL MANAGEMENT CO LP	298,542298,542	$86M	0.53%	ADD 6%
39	Amundi	283,536283,536	$82M	0.50%	TRIM -44%
40	Freestone Grove Partners LP	283,480283,480	$82M	0.50%	NEW
41	SEI INVESTMENTS CO	256,408256,408	$74M	0.45%	ADD 31%
42	GOLDMAN SACHS GROUP INC	254,468254,468	$74M	0.45%	TRIM -22%
43	Quantinno Capital Management LP	242,882242,882	$70M	0.43%	ADD 127%
44	BANK OF AMERICA CORP /DE/	240,190240,190	$69M	0.43%	TRIM -13%
45	Caisse de depot et placement du Quebec	235,783235,783	$68M	0.42%	TRIM -7%
46	Swedbank AB	214,014214,014	$62M	0.38%	ADD 3%
47	CITIGROUP INC	188,811188,811	$55M	0.33%	ADD 138%
48	Allianz Asset Management GmbH	182,404182,404	$53M	0.32%	TRIM -50%
49	FMR LLC	179,686179,686	$52M	0.32%	ADD 12%
50	Boston Trust Walden Corp	177,302177,302	$51M	0.31%	TRIM -3%
51	BANK OF MONTREAL /CAN/	174,058174,058	$50M	0.31%	TRIM -43%
52	Swiss National Bank	170,480170,480	$49M	0.30%	ADD 8%
53	PANAGORA ASSET MANAGEMENT INC	165,467165,467	$48M	0.29%	ADD 10%
54	Gotham Asset Management, LLC	162,229162,229	$47M	0.29%	ADD 9%
55	Nuveen, LLC	159,232159,232	$46M	0.28%	TRIM -4%
56	ACADIAN ASSET MANAGEMENT LLC	156,508156,508	$45M	0.28%	TRIM -68%
57	California Public Employees Retirement System	148,307148,307	$43M	0.26%	TRIM -8%
58	Squarepoint Ops LLC	147,850147,850	$43M	0.26%	ADD 9519%
59	RHUMBLINE ADVISERS	141,781141,781	$41M	0.25%	TRIM -2%
60	Russell Investments Group, Ltd.	142,761142,761	$41M	0.25%	TRIM -7%
61	Sumitomo Mitsui Trust Group, Inc.	136,038136,038	$39M	0.24%	TRIM -6%
62	Mitsubishi UFJ Asset Management Co., Ltd.	133,239133,239	$39M	0.24%	ADD 7%
63	PRICE T ROWE ASSOCIATES INC /MD/	131,132131,132	$38M	0.23%	TRIM -21%
64	Meridiem Capital Partners LP	130,139130,139	$38M	0.23%	NEW
65	BARCLAYS PLC	129,720129,720	$38M	0.23%	TRIM -16%
66	Man Group plc	128,432128,432	$37M	0.23%	ADD 320%
67	Vanguard Global Advisers, LLC	124,029124,029	$36M	0.22%	NEW
68	PFA Pension, Forsikringsaktieselskab	121,514121,514	$35M	0.22%	—
69	Talos Eurisko Asset Management LP	119,963119,963	$35M	0.21%	ADD 68%
70	SG Americas Securities, LLC	118,072118,072	$34M	0.21%	ADD 233%
71	MILLENNIUM MANAGEMENT LLC	109,184109,184	$32M	0.19%	TRIM -32%
72	Treasurer of the State of North Carolina	107,294107,294	$31M	0.19%	ADD 8%
73	FEDERATED HERMES, INC.	107,224107,224	$31M	0.19%	TRIM -7%
74	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	101,792101,792	$29M	0.18%	—
75	VANGUARD ASSET MANAGEMENT, Ltd	100,302100,302	$29M	0.18%	NEW
76	KLP KAPITALFORVALTNING AS	100,134100,134	$29M	0.18%	TRIM -16%
77	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	96,92096,920	$28M	0.17%	TRIM -2%
78	STOREBRAND ASSET MANAGEMENT AS	92,61092,610	$27M	0.16%	TRIM -25%
79	FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND	87,40087,400	$25M	0.15%	ADD 73%
80	Universal- Beteiligungs- und Servicegesellschaft mbH	89,77089,770	$25M	0.16%	TRIM -5%
81	CANADA LIFE ASSURANCE Co	86,75286,752	$25M	0.15%	TRIM -2%
82	Lansforsakringar Fondforvaltning AB (publ)	81,11081,110	$23M	0.14%	—
83	Fisher Asset Management, LLC	79,71979,719	$23M	0.14%	—
84	PRINCIPAL FINANCIAL GROUP INC	79,18679,186	$23M	0.14%	TRIM -5%
85	Eurizon Capital SGR S.p.A.	78,68878,688	$23M	0.14%	TRIM -14%
86	Addenda Capital Inc.	72,99972,999	$21M	0.13%	TRIM -4%
87	GLENMEDE TRUST CO NA	69,61269,612	$20M	0.12%	TRIM -12%
88	APG Asset Management N.V.	78,42178,421	$20M	0.14%	TRIM -7%
89	WELLS FARGO & COMPANY/MN	67,05767,057	$19M	0.12%	—
90	DekaBank Deutsche Girozentrale	65,82665,826	$19M	0.12%	—
91	Swiss Life Asset Management Ltd	56,95156,951	$19M	0.10%	ADD 167%
92	DANSKE BANK A/S	65,03865,038	$19M	0.12%	ADD 8%
93	FRANKLIN RESOURCES INC	63,61963,619	$18M	0.11%	ADD 6%
94	Mitsubishi UFJ Trust & Banking Corp	59,33059,330	$17M	0.11%	ADD 3%
95	SORA INVESTORS LLC	58,84358,843	$17M	0.10%	NEW
96	AVIVA PLC	57,57157,571	$17M	0.10%	TRIM -4%
97	SG Capital Management LLC	56,94856,948	$16M	0.10%	TRIM -33%
98	NISSAY ASSET MANAGEMENT CORP /JAPAN	54,14654,146	$16M	0.10%	ADD 98%
99	ROYAL BANK OF CANADA	53,68853,688	$16M	0.10%	ADD 54%
100	SEIZERT CAPITAL PARTNERS, LLC	53,18853,188	$15M	0.09%	ADD 3%

† 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.

6.3M

6.4M

6.5M

6.4M

6.3M

6.2M

$1.8B

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

5.1M

5.4M

5.2M

4.8M

5.5M

4.6M

$1.3B

VANGUARD CAPITAL MANAGEMENT LLC

—

3.7M

$1.1B

STATE STREET CORP

3.2M

3.1M

3.2M

3.1M

3.0M

$862M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

3.0M

$861M

Jericho Capital Asset Management L.P.

—

2.3M

2.6M

$765M

GEODE CAPITAL MANAGEMENT, LLC

1.6M

1.7M

1.8M

1.7M

$504M

FIRST TRUST ADVISORS LP

1.3M

1.5M

1.6M

2.8M

1.5M

$427M

Invesco Ltd.

1.7M

1.5M

1.4M

1.5M

1.4M

$418M

VICTORY CAPITAL MANAGEMENT INC

157K

199K

66K

347K

473K

1.0M

$296M

LYRICAL ASSET MANAGEMENT LP

1.1M

988K

1.0M

987K

947K

$274M

MORGAN STANLEY

670K

751K

954K

883K

841K

856K

$248M

WELLINGTON MANAGEMENT GROUP LLP

734K

503K

415K

418K

839K

818K

$237M

AMERICAN CENTURY COMPANIES INC

817K

528K

538K

424K

684K

785K

$227M

AMERIPRISE FINANCIAL INC

1.3M

734K

682K

482K

195K

782K

$226M

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	715	56,354,955	99.9%	$16.3B
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 · FFIV

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

Holder

% of class

Type

As of

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

8.1%

QII

2026-03-31

SEC →

VANGUARD CAPITAL MANAGEMENT LLC

7.49%

QII

2026-03-31

SEC →

VANGUARD PORTFOLIO MANAGEMENT LLC

5.27%

QII

2026-03-31

SEC →

FIRST TRUST PORTFOLIOS LP

2.93%

QII

2026-03-31

SEC →

VANGUARD GROUP INC

QII

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

715 holders

% of shares outstanding held

99.9%

Shares held (13F)

56,354,955

Reporting holders

715

Top holders

largest 100 of 715 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	6,234,4276.2M	$1.8B	11.05%	—
2	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	4,579,3014.6M	$1.3B	8.12%	TRIM -16%
3	VANGUARD CAPITAL MANAGEMENT LLC	3,670,1413.7M	$1.1B	6.51%	NEW†
4	STATE STREET CORP	2,979,0293.0M	$862M	5.28%	TRIM -4%
5	VANGUARD PORTFOLIO MANAGEMENT LLC	2,975,5943.0M	$861M	5.27%	NEW†
6	Jericho Capital Asset Management L.P.	2,643,0132.6M	$765M	4.68%	ADD 16%
7	GEODE CAPITAL MANAGEMENT, LLC	1,742,4701.7M	$504M	3.09%	—
8	FIRST TRUST ADVISORS LP	1,476,9871.5M	$427M	2.62%	TRIM -46%
9	Invesco Ltd.	1,444,8191.4M	$418M	2.56%	TRIM -6%
10	VICTORY CAPITAL MANAGEMENT INC	1,021,5411.0M	$296M	1.81%	ADD 116%
11	LYRICAL ASSET MANAGEMENT LP	947,361947,361	$274M	1.68%	TRIM -4%
12	MORGAN STANLEY	855,907855,907	$248M	1.52%	—
13	WELLINGTON MANAGEMENT GROUP LLP	817,666817,666	$237M	1.45%	TRIM -3%
14	AMERICAN CENTURY COMPANIES INC	784,767784,767	$227M	1.39%	ADD 15%
15	AMERIPRISE FINANCIAL INC	781,535781,535	$226M	1.39%	ADD 302%
16	NORTHERN TRUST CORP	735,834735,834	$213M	1.30%	TRIM -22%
17	ALLIANCEBERNSTEIN L.P.	828,314828,314	$211M	1.47%	ADD 301%
18	AQR CAPITAL MANAGEMENT LLC	682,372682,372	$193M	1.21%	ADD 8%
19	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	649,948649,948	$188M	1.15%	ADD 18%
20	DIMENSIONAL FUND ADVISORS LP	603,086603,086	$174M	1.07%	—
21	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	582,310582,310	$168M	1.03%	TRIM -8%
22	HSBC HOLDINGS PLC	579,679579,679	$168M	1.03%	TRIM -50%
23	UBS Group AG	573,103573,103	$166M	1.02%	TRIM -44%
24	JPMORGAN CHASE & CO	571,662571,662	$160M	1.01%	ADD 127%
25	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	509,055509,055	$147M	0.90%	—
26	Legal & General Group Plc	490,494490,494	$142M	0.87%	—
27	Point72 Asset Management, L.P.	482,256482,256	$140M	0.85%	ADD 34%
28	VOYA INVESTMENT MANAGEMENT LLC	423,319423,319	$122M	0.75%	TRIM -5%
29	BNP PARIBAS FINANCIAL MARKETS	406,567406,567	$118M	0.72%	ADD 219%
30	DEUTSCHE BANK AG\	405,551405,551	$117M	0.72%	TRIM -58%
31	Bank of New York Mellon Corp	385,894385,894	$112M	0.68%	TRIM -7%
32	Junto Capital Management LP	354,177354,177	$102M	0.63%	ADD 33%
33	Robeco Institutional Asset Management B.V.	331,660331,660	$96M	0.59%	ADD 20%
34	Penserra Capital Management LLC	324,850324,850	$94M	0.58%	TRIM -18%
35	VANGUARD FIDUCIARY TRUST CO	318,122318,122	$92M	0.56%	NEW
36	Alyeska Investment Group, L.P.	310,517310,517	$90M	0.55%	TRIM -21%
37	CITADEL ADVISORS LLC	306,985306,985	$89M	0.54%	TRIM -30%
38	WESTFIELD CAPITAL MANAGEMENT CO LP	298,542298,542	$86M	0.53%	ADD 6%
39	Amundi	283,536283,536	$82M	0.50%	TRIM -44%
40	Freestone Grove Partners LP	283,480283,480	$82M	0.50%	NEW
41	SEI INVESTMENTS CO	256,408256,408	$74M	0.45%	ADD 31%
42	GOLDMAN SACHS GROUP INC	254,468254,468	$74M	0.45%	TRIM -22%
43	Quantinno Capital Management LP	242,882242,882	$70M	0.43%	ADD 127%
44	BANK OF AMERICA CORP /DE/	240,190240,190	$69M	0.43%	TRIM -13%
45	Caisse de depot et placement du Quebec	235,783235,783	$68M	0.42%	TRIM -7%
46	Swedbank AB	214,014214,014	$62M	0.38%	ADD 3%
47	CITIGROUP INC	188,811188,811	$55M	0.33%	ADD 138%
48	Allianz Asset Management GmbH	182,404182,404	$53M	0.32%	TRIM -50%
49	FMR LLC	179,686179,686	$52M	0.32%	ADD 12%
50	Boston Trust Walden Corp	177,302177,302	$51M	0.31%	TRIM -3%
51	BANK OF MONTREAL /CAN/	174,058174,058	$50M	0.31%	TRIM -43%
52	Swiss National Bank	170,480170,480	$49M	0.30%	ADD 8%
53	PANAGORA ASSET MANAGEMENT INC	165,467165,467	$48M	0.29%	ADD 10%
54	Gotham Asset Management, LLC	162,229162,229	$47M	0.29%	ADD 9%
55	Nuveen, LLC	159,232159,232	$46M	0.28%	TRIM -4%
56	ACADIAN ASSET MANAGEMENT LLC	156,508156,508	$45M	0.28%	TRIM -68%
57	California Public Employees Retirement System	148,307148,307	$43M	0.26%	TRIM -8%
58	Squarepoint Ops LLC	147,850147,850	$43M	0.26%	ADD 9519%
59	RHUMBLINE ADVISERS	141,781141,781	$41M	0.25%	TRIM -2%
60	Russell Investments Group, Ltd.	142,761142,761	$41M	0.25%	TRIM -7%
61	Sumitomo Mitsui Trust Group, Inc.	136,038136,038	$39M	0.24%	TRIM -6%
62	Mitsubishi UFJ Asset Management Co., Ltd.	133,239133,239	$39M	0.24%	ADD 7%
63	PRICE T ROWE ASSOCIATES INC /MD/	131,132131,132	$38M	0.23%	TRIM -21%
64	Meridiem Capital Partners LP	130,139130,139	$38M	0.23%	NEW
65	BARCLAYS PLC	129,720129,720	$38M	0.23%	TRIM -16%
66	Man Group plc	128,432128,432	$37M	0.23%	ADD 320%
67	Vanguard Global Advisers, LLC	124,029124,029	$36M	0.22%	NEW
68	PFA Pension, Forsikringsaktieselskab	121,514121,514	$35M	0.22%	—
69	Talos Eurisko Asset Management LP	119,963119,963	$35M	0.21%	ADD 68%
70	SG Americas Securities, LLC	118,072118,072	$34M	0.21%	ADD 233%
71	MILLENNIUM MANAGEMENT LLC	109,184109,184	$32M	0.19%	TRIM -32%
72	Treasurer of the State of North Carolina	107,294107,294	$31M	0.19%	ADD 8%
73	FEDERATED HERMES, INC.	107,224107,224	$31M	0.19%	TRIM -7%
74	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	101,792101,792	$29M	0.18%	—
75	VANGUARD ASSET MANAGEMENT, Ltd	100,302100,302	$29M	0.18%	NEW
76	KLP KAPITALFORVALTNING AS	100,134100,134	$29M	0.18%	TRIM -16%
77	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	96,92096,920	$28M	0.17%	TRIM -2%
78	STOREBRAND ASSET MANAGEMENT AS	92,61092,610	$27M	0.16%	TRIM -25%
79	FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND	87,40087,400	$25M	0.15%	ADD 73%
80	Universal- Beteiligungs- und Servicegesellschaft mbH	89,77089,770	$25M	0.16%	TRIM -5%
81	CANADA LIFE ASSURANCE Co	86,75286,752	$25M	0.15%	TRIM -2%
82	Lansforsakringar Fondforvaltning AB (publ)	81,11081,110	$23M	0.14%	—
83	Fisher Asset Management, LLC	79,71979,719	$23M	0.14%	—
84	PRINCIPAL FINANCIAL GROUP INC	79,18679,186	$23M	0.14%	TRIM -5%
85	Eurizon Capital SGR S.p.A.	78,68878,688	$23M	0.14%	TRIM -14%
86	Addenda Capital Inc.	72,99972,999	$21M	0.13%	TRIM -4%
87	GLENMEDE TRUST CO NA	69,61269,612	$20M	0.12%	TRIM -12%
88	APG Asset Management N.V.	78,42178,421	$20M	0.14%	TRIM -7%
89	WELLS FARGO & COMPANY/MN	67,05767,057	$19M	0.12%	—
90	DekaBank Deutsche Girozentrale	65,82665,826	$19M	0.12%	—
91	Swiss Life Asset Management Ltd	56,95156,951	$19M	0.10%	ADD 167%
92	DANSKE BANK A/S	65,03865,038	$19M	0.12%	ADD 8%
93	FRANKLIN RESOURCES INC	63,61963,619	$18M	0.11%	ADD 6%
94	Mitsubishi UFJ Trust & Banking Corp	59,33059,330	$17M	0.11%	ADD 3%
95	SORA INVESTORS LLC	58,84358,843	$17M	0.10%	NEW
96	AVIVA PLC	57,57157,571	$17M	0.10%	TRIM -4%
97	SG Capital Management LLC	56,94856,948	$16M	0.10%	TRIM -33%
98	NISSAY ASSET MANAGEMENT CORP /JAPAN	54,14654,146	$16M	0.10%	ADD 98%
99	ROYAL BANK OF CANADA	53,68853,688	$16M	0.10%	ADD 54%
100	SEIZERT CAPITAL PARTNERS, LLC	53,18853,188	$15M	0.09%	ADD 3%

† 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.

6.3M

6.4M

6.5M

6.4M

6.3M

6.2M

$1.8B

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

5.1M

5.4M

5.2M

4.8M

5.5M

4.6M

$1.3B

VANGUARD CAPITAL MANAGEMENT LLC

—

3.7M

$1.1B

STATE STREET CORP

3.2M

3.1M

3.2M

3.1M

3.0M

$862M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

3.0M

$861M

Jericho Capital Asset Management L.P.

—

2.3M

2.6M

$765M

GEODE CAPITAL MANAGEMENT, LLC

1.6M

1.7M

1.8M

1.7M

$504M

FIRST TRUST ADVISORS LP

1.3M

1.5M

1.6M

2.8M

1.5M

$427M

Invesco Ltd.

1.7M

1.5M

1.4M

1.5M

1.4M

$418M

VICTORY CAPITAL MANAGEMENT INC

157K

199K

66K

347K

473K

1.0M

$296M

LYRICAL ASSET MANAGEMENT LP

1.1M

988K

1.0M

987K

947K

$274M

MORGAN STANLEY

670K

751K

954K

883K

841K

856K

$248M

WELLINGTON MANAGEMENT GROUP LLP

734K

503K

415K

418K

839K

818K

$237M

AMERICAN CENTURY COMPANIES INC

817K

528K

538K

424K

684K

785K

$227M

AMERIPRISE FINANCIAL INC

1.3M

734K

682K

482K

195K

782K

$226M

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	715	56,354,955	99.9%	$16.3B
2025-Q4

Short interest has its own tab now — open SI →

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

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

Holder

% of class

Type

As of

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

8.1%

QII

2026-03-31

SEC →

VANGUARD CAPITAL MANAGEMENT LLC

7.49%

QII

2026-03-31

SEC →

VANGUARD PORTFOLIO MANAGEMENT LLC

5.27%

QII

2026-03-31

SEC →

FIRST TRUST PORTFOLIOS LP

2.93%

QII

2026-03-31

SEC →

VANGUARD GROUP INC

QII

FFIV US Equity☆

Institutional ownership· 13F filers holding FFIV · 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 · FFIV

Institutional ownership· 13F filers holding FFIV · 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 · FFIV

FFIV US Equity