POWL US Equity

POWELL INDUSTRIES INC

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Information Technology · Switchgear & Switchboard Apparatus · CIK 80420 · FYE 0930

$186.39

-14.61 (-7.27%)

USD · as of 2026-07-29 · marketstack

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

473 holders

% of shares outstanding held

26.2%

Shares held (13F)

9,528,739

Reporting holders

473

Top holders

largest 100 of 473 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	1,406,0731.4M	$761M	3.86%	—
2	FIRST TRUST ADVISORS LP	516,551516,551	$279M	1.42%	—
3	VANGUARD CAPITAL MANAGEMENT LLC	424,609424,609	$230M	1.17%	NEW
4	VANGUARD PORTFOLIO MANAGEMENT LLC	383,599383,599	$208M	1.05%	NEW
5	STATE STREET CORP	362,437362,437	$196M	0.99%	ADD 3%
6	DIMENSIONAL FUND ADVISORS LP	323,595323,595	$175M	0.89%	TRIM -11%
7	MORGAN STANLEY	271,996271,996	$147M	0.75%	ADD 41%
8	Fisher Asset Management, LLC	256,915256,915	$139M	0.71%	TRIM -19%
9	GEODE CAPITAL MANAGEMENT, LLC	242,857242,857	$131M	0.67%	—
10	Invesco Ltd.	241,808241,808	$131M	0.66%	ADD 12%
11	JANUS HENDERSON GROUP PLC	224,966224,966	$122M	0.62%	ADD 55%
12	GW&K Investment Management, LLC	200,535200,535	$109M	0.55%	TRIM -21%
13	FEDERATED HERMES, INC.	156,752156,752	$85M	0.43%	TRIM -15%
14	JANE STREET GROUP, LLC	154,401154,401	$84M	0.42%	ADD 12213%
15	UBS Group AG	146,142146,142	$79M	0.40%	ADD 49%
16	Voss Capital, LP	136,000136,000	$74M	0.37%	TRIM -61%
17	GOLDMAN SACHS GROUP INC	126,455126,455	$68M	0.35%	ADD 9%
18	JACOBS LEVY EQUITY MANAGEMENT, INC	123,940123,940	$67M	0.34%	TRIM -6%
19	NORTHERN TRUST CORP	112,416112,416	$61M	0.31%	TRIM -3%
20	Rockefeller Capital Management L.P.	99,91799,917	$54M	0.27%	TRIM -12%
21	Capital World Investors	95,84795,847	$52M	0.26%	ADD 48%
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	93,75293,752	$51M	0.26%	TRIM -3%
23	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	93,64093,640	$51M	0.26%	TRIM -10%
24	BANK OF AMERICA CORP /DE/	90,79790,797	$49M	0.25%	ADD 324%
25	ENVESTNET ASSET MANAGEMENT INC	88,22788,227	$48M	0.24%	TRIM -9%
26	Tidal Investments LLC	87,64387,643	$47M	0.24%	ADD 11402%
27	Tema ETFs LLC	84,68284,682	$46M	0.23%	ADD 11%
28	Portolan Capital Management, LLC	75,83075,830	$41M	0.21%	TRIM -4%
29	PRICE T ROWE ASSOCIATES INC /MD/	75,33175,331	$41M	0.21%	ADD 118%
30	RAYMOND JAMES FINANCIAL INC	75,83075,830	$40M	0.21%	TRIM -32%
31	Bank of New York Mellon Corp	73,25973,259	$40M	0.20%	TRIM -3%
32	VANGUARD FIDUCIARY TRUST CO	66,20666,206	$36M	0.18%	NEW
33	TCW GROUP INC	65,36465,364	$35M	0.18%	ADD 98%
34	PRINCIPAL FINANCIAL GROUP INC	65,05165,051	$35M	0.18%	ADD 44%
35	Vision One Management Partners, LP	64,98364,983	$35M	0.18%	ADD 6%
36	Baird Financial Group, Inc.	64,25064,250	$35M	0.18%	ADD 5%
37	Stephens Investment Management Group LLC	59,77759,777	$32M	0.16%	TRIM -22%
38	Allspring Global Investments Holdings, LLC	52,29452,294	$29M	0.14%	TRIM -5%
39	Driehaus Capital Management LLC	50,35850,358	$27M	0.14%	ADD 87%
40	BNP PARIBAS FINANCIAL MARKETS	42,19042,190	$23M	0.12%	ADD 1828%
41	Public Sector Pension Investment Board	41,25741,257	$22M	0.11%	ADD 5%
42	ROYCE & ASSOCIATES LP	41,22041,220	$22M	0.11%	TRIM -33%
43	Hodges Capital Management Inc.	40,79340,793	$22M	0.11%	TRIM -21%
44	Encompass Capital Advisors LLC	40,00040,000	$22M	0.11%	NEW
45	Aperture Investors, LLC	39,46639,466	$21M	0.11%	TRIM -49%
46	Carnegie Investment Counsel	36,37636,376	$20M	0.10%	TRIM -11%
47	LOOMIS SAYLES & CO L P	35,85135,851	$19M	0.10%	TRIM -29%
48	RENAISSANCE TECHNOLOGIES LLC	34,69434,694	$19M	0.10%	ADD 229%
49	OBERWEIS ASSET MANAGEMENT INC/	34,15734,157	$18M	0.09%	TRIM -30%
50	WINTON GROUP Ltd	30,35530,355	$16M	0.08%	ADD 709%
51	AQR CAPITAL MANAGEMENT LLC	29,65029,650	$16M	0.08%	TRIM -9%
52	DEUTSCHE BANK AG\	29,55129,551	$16M	0.08%	ADD 3%
53	AMERICAN CENTURY COMPANIES INC	29,54429,544	$16M	0.08%	TRIM -45%
54	Stratos Wealth Partners, LTD.	29,23229,232	$16M	0.08%	—
55	LPL Financial LLC	29,08129,081	$16M	0.08%	TRIM -3%
56	DANSKE BANK A/S	27,94727,947	$15M	0.08%	TRIM -21%
57	JPMORGAN CHASE & CO	30,07730,077	$15M	0.08%	—
58	Venture Visionary Partners LLC	27,90427,904	$15M	0.08%	TRIM -36%
59	ROYAL BANK OF CANADA	25,71825,718	$14M	0.07%	TRIM -23%
60	JENNISON ASSOCIATES LLC	25,59425,594	$14M	0.07%	NEW
61	RHUMBLINE ADVISERS	25,15825,158	$14M	0.07%	—
62	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	24,82224,822	$13M	0.07%	ADD 6%
63	Cerity Partners LLC	24,33724,337	$13M	0.07%	TRIM -35%
64	Legal & General Group Plc	23,07823,078	$12M	0.06%	TRIM -10%
65	WELLS FARGO & COMPANY/MN	22,82422,824	$12M	0.06%	TRIM -31%
66	Nuveen, LLC	22,26322,263	$12M	0.06%	ADD 15%
67	Granite Investment Partners, LLC	21,90921,909	$12M	0.06%	TRIM -37%
68	COMMONWEALTH EQUITY SERVICES, LLC	20,70620,706	$11M	0.06%	ADD 5%
69	TWO SIGMA INVESTMENTS, LP	20,62720,627	$11M	0.06%	—
70	Walleye Trading LLC	20,48020,480	$11M	0.06%	NEW
71	RPG Investment Advisory, LLC	57,98957,989	$10M	0.16%	TRIM -15%
72	Swiss National Bank	19,22019,220	$10M	0.05%	—
73	Nicholas Investment Partners, LP	18,52018,520	$10M	0.05%	—
74	ADVISORS MANAGEMENT GROUP INC /ADV	18,38118,381	$10M	0.05%	TRIM -30%
75	Russell Investments Group, Ltd.	17,83617,836	$10M	0.05%	ADD 7%
76	POLEN CAPITAL MANAGEMENT LLCtracked	17,48517,485	$9M	0.05%	TRIM -14%
77	AMERIPRISE FINANCIAL INC	17,45517,455	$9M	0.05%	TRIM -3%
78	ASSETMARK, INC	16,52416,524	$9M	0.05%	ADD 11%
79	Private Advisory Group LLC	16,47716,477	$9M	0.05%	TRIM -53%
80	SEI INVESTMENTS CO	16,19916,199	$9M	0.04%	ADD 111%
81	Vest Financial, LLC	15,81215,812	$9M	0.04%	ADD 10%
82	BARCLAYS PLC	15,50515,505	$8M	0.04%	TRIM -8%
83	Man Group plc	15,42015,420	$8M	0.04%	TRIM -23%
84	Munro Partners	14,68014,680	$8M	0.04%	NEW
85	STATE OF WISCONSIN INVESTMENT BOARD	14,23514,235	$8M	0.04%	TRIM -24%
86	CONGRESS ASSET MANAGEMENT CO	14,00914,009	$8M	0.04%	ADD 16%
87	Quantum Private Wealth, LLC	13,41413,414	$7M	0.04%	—
88	Pier Capital, LLC	13,35813,358	$7M	0.04%	TRIM -7%
89	D. E. Shaw & Co., Inc.	13,24713,247	$7M	0.04%	TRIM -5%
90	MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	13,15213,152	$7M	0.04%	ADD 12%
91	GKV Capital Management Co., Inc.	12,91112,911	$7M	0.04%	TRIM -7%
92	Advisory Services Network, LLC	12,48212,482	$7M	0.03%	—
93	INTECH INVESTMENT MANAGEMENT LLC	11,91411,914	$6M	0.03%	ADD 79%
94	CHATHAM CAPITAL GROUP, INC.	11,80911,809	$6M	0.03%	TRIM -19%
95	BESSEMER GROUP INC	11,28311,283	$6M	0.03%	ADD 15571%
96	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	11,27111,271	$6M	0.03%	ADD 23%
97	GREAT VALLEY ADVISOR GROUP, INC.	11,01411,014	$6M	0.03%	—
98	ALGERT GLOBAL LLC	10,65910,659	$6M	0.03%	ADD 27%
99	1060 Capital, LLC	10,00010,000	$5M	0.03%	NEW
100	PRUDENTIAL FINANCIAL INC	9,7539,753	$5M	0.03%	ADD 11%

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.

1.6M

1.5M

1.4M

$761M

FIRST TRUST ADVISORS LP

123K

282K

371K

615K

526K

517K

$279M

VANGUARD CAPITAL MANAGEMENT LLC

—

425K

$230M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

384K

$208M

STATE STREET CORP

365K

349K

352K

353K

352K

362K

$196M

DIMENSIONAL FUND ADVISORS LP

480K

483K

409K

368K

363K

324K

$175M

MORGAN STANLEY

612K

617K

169K

296K

193K

272K

$147M

Fisher Asset Management, LLC

—

200K

201K

300K

317K

257K

$139M

GEODE CAPITAL MANAGEMENT, LLC

224K

232K

238K

239K

243K

$131M

Invesco Ltd.

265K

276K

340K

348K

215K

242K

$131M

JANUS HENDERSON GROUP PLC

23K

22K

18K

117K

145K

225K

$122M

GW&K Investment Management, LLC

—

164K

182K

225K

255K

201K

$109M

FEDERATED HERMES, INC.

63K

123K

152K

179K

185K

157K

$85M

JANE STREET GROUP, LLC

42K

—

32K

154K

$84M

UBS Group AG

123K

168K

149K

158K

98K

146K

$79M

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	473	9,528,739	26.2%	$5.1B
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 · POWL

Large holders — 13G, passive (top 4 by % of class)

Holder	% of class	Type	As of
BlackRock, Inc.	9.7%	QII	2026-06-30	SEC →
FIRST TRUST PORTFOLIOS LP	5.93%	QII	2025-09-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →
Kovitz Investment Group Partners, LLC	0%	QII	2025-10-31	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

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

473 holders

% of shares outstanding held

26.2%

Shares held (13F)

9,528,739

Reporting holders

473

Top holders

largest 100 of 473 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	1,406,0731.4M	$761M	3.86%	—
2	FIRST TRUST ADVISORS LP	516,551516,551	$279M	1.42%	—
3	VANGUARD CAPITAL MANAGEMENT LLC	424,609424,609	$230M	1.17%	NEW
4	VANGUARD PORTFOLIO MANAGEMENT LLC	383,599383,599	$208M	1.05%	NEW
5	STATE STREET CORP	362,437362,437	$196M	0.99%	ADD 3%
6	DIMENSIONAL FUND ADVISORS LP	323,595323,595	$175M	0.89%	TRIM -11%
7	MORGAN STANLEY	271,996271,996	$147M	0.75%	ADD 41%
8	Fisher Asset Management, LLC	256,915256,915	$139M	0.71%	TRIM -19%
9	GEODE CAPITAL MANAGEMENT, LLC	242,857242,857	$131M	0.67%	—
10	Invesco Ltd.	241,808241,808	$131M	0.66%	ADD 12%
11	JANUS HENDERSON GROUP PLC	224,966224,966	$122M	0.62%	ADD 55%
12	GW&K Investment Management, LLC	200,535200,535	$109M	0.55%	TRIM -21%
13	FEDERATED HERMES, INC.	156,752156,752	$85M	0.43%	TRIM -15%
14	JANE STREET GROUP, LLC	154,401154,401	$84M	0.42%	ADD 12213%
15	UBS Group AG	146,142146,142	$79M	0.40%	ADD 49%
16	Voss Capital, LP	136,000136,000	$74M	0.37%	TRIM -61%
17	GOLDMAN SACHS GROUP INC	126,455126,455	$68M	0.35%	ADD 9%
18	JACOBS LEVY EQUITY MANAGEMENT, INC	123,940123,940	$67M	0.34%	TRIM -6%
19	NORTHERN TRUST CORP	112,416112,416	$61M	0.31%	TRIM -3%
20	Rockefeller Capital Management L.P.	99,91799,917	$54M	0.27%	TRIM -12%
21	Capital World Investors	95,84795,847	$52M	0.26%	ADD 48%
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	93,75293,752	$51M	0.26%	TRIM -3%
23	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	93,64093,640	$51M	0.26%	TRIM -10%
24	BANK OF AMERICA CORP /DE/	90,79790,797	$49M	0.25%	ADD 324%
25	ENVESTNET ASSET MANAGEMENT INC	88,22788,227	$48M	0.24%	TRIM -9%
26	Tidal Investments LLC	87,64387,643	$47M	0.24%	ADD 11402%
27	Tema ETFs LLC	84,68284,682	$46M	0.23%	ADD 11%
28	Portolan Capital Management, LLC	75,83075,830	$41M	0.21%	TRIM -4%
29	PRICE T ROWE ASSOCIATES INC /MD/	75,33175,331	$41M	0.21%	ADD 118%
30	RAYMOND JAMES FINANCIAL INC	75,83075,830	$40M	0.21%	TRIM -32%
31	Bank of New York Mellon Corp	73,25973,259	$40M	0.20%	TRIM -3%
32	VANGUARD FIDUCIARY TRUST CO	66,20666,206	$36M	0.18%	NEW
33	TCW GROUP INC	65,36465,364	$35M	0.18%	ADD 98%
34	PRINCIPAL FINANCIAL GROUP INC	65,05165,051	$35M	0.18%	ADD 44%
35	Vision One Management Partners, LP	64,98364,983	$35M	0.18%	ADD 6%
36	Baird Financial Group, Inc.	64,25064,250	$35M	0.18%	ADD 5%
37	Stephens Investment Management Group LLC	59,77759,777	$32M	0.16%	TRIM -22%
38	Allspring Global Investments Holdings, LLC	52,29452,294	$29M	0.14%	TRIM -5%
39	Driehaus Capital Management LLC	50,35850,358	$27M	0.14%	ADD 87%
40	BNP PARIBAS FINANCIAL MARKETS	42,19042,190	$23M	0.12%	ADD 1828%
41	Public Sector Pension Investment Board	41,25741,257	$22M	0.11%	ADD 5%
42	ROYCE & ASSOCIATES LP	41,22041,220	$22M	0.11%	TRIM -33%
43	Hodges Capital Management Inc.	40,79340,793	$22M	0.11%	TRIM -21%
44	Encompass Capital Advisors LLC	40,00040,000	$22M	0.11%	NEW
45	Aperture Investors, LLC	39,46639,466	$21M	0.11%	TRIM -49%
46	Carnegie Investment Counsel	36,37636,376	$20M	0.10%	TRIM -11%
47	LOOMIS SAYLES & CO L P	35,85135,851	$19M	0.10%	TRIM -29%
48	RENAISSANCE TECHNOLOGIES LLC	34,69434,694	$19M	0.10%	ADD 229%
49	OBERWEIS ASSET MANAGEMENT INC/	34,15734,157	$18M	0.09%	TRIM -30%
50	WINTON GROUP Ltd	30,35530,355	$16M	0.08%	ADD 709%
51	AQR CAPITAL MANAGEMENT LLC	29,65029,650	$16M	0.08%	TRIM -9%
52	DEUTSCHE BANK AG\	29,55129,551	$16M	0.08%	ADD 3%
53	AMERICAN CENTURY COMPANIES INC	29,54429,544	$16M	0.08%	TRIM -45%
54	Stratos Wealth Partners, LTD.	29,23229,232	$16M	0.08%	—
55	LPL Financial LLC	29,08129,081	$16M	0.08%	TRIM -3%
56	DANSKE BANK A/S	27,94727,947	$15M	0.08%	TRIM -21%
57	JPMORGAN CHASE & CO	30,07730,077	$15M	0.08%	—
58	Venture Visionary Partners LLC	27,90427,904	$15M	0.08%	TRIM -36%
59	ROYAL BANK OF CANADA	25,71825,718	$14M	0.07%	TRIM -23%
60	JENNISON ASSOCIATES LLC	25,59425,594	$14M	0.07%	NEW
61	RHUMBLINE ADVISERS	25,15825,158	$14M	0.07%	—
62	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	24,82224,822	$13M	0.07%	ADD 6%
63	Cerity Partners LLC	24,33724,337	$13M	0.07%	TRIM -35%
64	Legal & General Group Plc	23,07823,078	$12M	0.06%	TRIM -10%
65	WELLS FARGO & COMPANY/MN	22,82422,824	$12M	0.06%	TRIM -31%
66	Nuveen, LLC	22,26322,263	$12M	0.06%	ADD 15%
67	Granite Investment Partners, LLC	21,90921,909	$12M	0.06%	TRIM -37%
68	COMMONWEALTH EQUITY SERVICES, LLC	20,70620,706	$11M	0.06%	ADD 5%
69	TWO SIGMA INVESTMENTS, LP	20,62720,627	$11M	0.06%	—
70	Walleye Trading LLC	20,48020,480	$11M	0.06%	NEW
71	RPG Investment Advisory, LLC	57,98957,989	$10M	0.16%	TRIM -15%
72	Swiss National Bank	19,22019,220	$10M	0.05%	—
73	Nicholas Investment Partners, LP	18,52018,520	$10M	0.05%	—
74	ADVISORS MANAGEMENT GROUP INC /ADV	18,38118,381	$10M	0.05%	TRIM -30%
75	Russell Investments Group, Ltd.	17,83617,836	$10M	0.05%	ADD 7%
76	POLEN CAPITAL MANAGEMENT LLCtracked	17,48517,485	$9M	0.05%	TRIM -14%
77	AMERIPRISE FINANCIAL INC	17,45517,455	$9M	0.05%	TRIM -3%
78	ASSETMARK, INC	16,52416,524	$9M	0.05%	ADD 11%
79	Private Advisory Group LLC	16,47716,477	$9M	0.05%	TRIM -53%
80	SEI INVESTMENTS CO	16,19916,199	$9M	0.04%	ADD 111%
81	Vest Financial, LLC	15,81215,812	$9M	0.04%	ADD 10%
82	BARCLAYS PLC	15,50515,505	$8M	0.04%	TRIM -8%
83	Man Group plc	15,42015,420	$8M	0.04%	TRIM -23%
84	Munro Partners	14,68014,680	$8M	0.04%	NEW
85	STATE OF WISCONSIN INVESTMENT BOARD	14,23514,235	$8M	0.04%	TRIM -24%
86	CONGRESS ASSET MANAGEMENT CO	14,00914,009	$8M	0.04%	ADD 16%
87	Quantum Private Wealth, LLC	13,41413,414	$7M	0.04%	—
88	Pier Capital, LLC	13,35813,358	$7M	0.04%	TRIM -7%
89	D. E. Shaw & Co., Inc.	13,24713,247	$7M	0.04%	TRIM -5%
90	MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	13,15213,152	$7M	0.04%	ADD 12%
91	GKV Capital Management Co., Inc.	12,91112,911	$7M	0.04%	TRIM -7%
92	Advisory Services Network, LLC	12,48212,482	$7M	0.03%	—
93	INTECH INVESTMENT MANAGEMENT LLC	11,91411,914	$6M	0.03%	ADD 79%
94	CHATHAM CAPITAL GROUP, INC.	11,80911,809	$6M	0.03%	TRIM -19%
95	BESSEMER GROUP INC	11,28311,283	$6M	0.03%	ADD 15571%
96	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	11,27111,271	$6M	0.03%	ADD 23%
97	GREAT VALLEY ADVISOR GROUP, INC.	11,01411,014	$6M	0.03%	—
98	ALGERT GLOBAL LLC	10,65910,659	$6M	0.03%	ADD 27%
99	1060 Capital, LLC	10,00010,000	$5M	0.03%	NEW
100	PRUDENTIAL FINANCIAL INC	9,7539,753	$5M	0.03%	ADD 11%

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.

1.6M

1.5M

1.4M

$761M

FIRST TRUST ADVISORS LP

123K

282K

371K

615K

526K

517K

$279M

VANGUARD CAPITAL MANAGEMENT LLC

—

425K

$230M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

384K

$208M

STATE STREET CORP

365K

349K

352K

353K

352K

362K

$196M

DIMENSIONAL FUND ADVISORS LP

480K

483K

409K

368K

363K

324K

$175M

MORGAN STANLEY

612K

617K

169K

296K

193K

272K

$147M

Fisher Asset Management, LLC

—

200K

201K

300K

317K

257K

$139M

GEODE CAPITAL MANAGEMENT, LLC

224K

232K

238K

239K

243K

$131M

Invesco Ltd.

265K

276K

340K

348K

215K

242K

$131M

JANUS HENDERSON GROUP PLC

23K

22K

18K

117K

145K

225K

$122M

GW&K Investment Management, LLC

—

164K

182K

225K

255K

201K

$109M

FEDERATED HERMES, INC.

63K

123K

152K

179K

185K

157K

$85M

JANE STREET GROUP, LLC

42K

—

32K

154K

$84M

UBS Group AG

123K

168K

149K

158K

98K

146K

$79M

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	473	9,528,739	26.2%	$5.1B
2025-Q4

Short interest has its own tab now — open SI →

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

Large holders — 13G, passive (top 4 by % of class)

Holder	% of class	Type	As of
BlackRock, Inc.	9.7%	QII	2026-06-30	SEC →
FIRST TRUST PORTFOLIOS LP	5.93%	QII	2025-09-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →
Kovitz Investment Group Partners, LLC	0%	QII	2025-10-31	SEC →

POWL US Equity☆

Institutional ownership· 13F filers holding POWL · 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 · POWL

Institutional ownership· 13F filers holding POWL · 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 · POWL

POWL US Equity