MWH · SOLV Energy, Inc. · Shareholders & Ownership
$23.25
+0.32 (+1.40%)
At close · Oct 21
Return incl. dividend (before tax)
Market Cap
$4.71B
Shares
202.39M
Volume · Oct 21
2.52M
Avg daily vol (3M)
1.64M
Every disclosed holder of MWH in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns MWH
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 131,399,009 | 64.92% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 70,987,713 | 35.08% |
| Registered funds (N-PORT, not summed) | 13,220,517 | 6.53% |
Shares outstanding: 202,386,722, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of MWH
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
78,050,441 | ||
| 1.1 |
AMERICAN SECURITIES LLC
13G
CIK 1475483 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(d), exempt investor, not summed
|
157,821,741 | ||
| 1.2 |
AMERICAN SECURITIES LLC
13F
CIK 1475483 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
82,920,401 | ||
| 2 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,772,967 | ||
| 2.1 |
iShares Russell Mid-Cap Growth ETF
Fund
S000004336 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
228,450 | ||
| 2.2 |
iShares Russell Mid-Cap ETF
Fund
S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
158,807 | ||
| 2.3 |
iShares Russell 1000 Growth ETF
Fund
S000004346 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
144,694 | ||
| 2.4 |
iShares Core S&P Total U.S. Stock Market ETF
Fund
S000004317 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
46,244 | ||
| 2.5 |
iShares U.S. Energy ETF
Fund
S000004321 · Registered fund · Jul 31, 2026
iShares Trust, not summed
|
29,708 | ||
| 3 |
Robeco Schweiz AG
13F
CIK 1418427 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,641,405 | ||
| 4 |
Driehaus Capital Management LLC
13F
CIK 938206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,378,054 | ||
| 4.1 |
Driehaus Small Cap Growth Fund
Fund
S000058261 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
|
360,589 | ||
| 4.2 |
Driehaus Small/Mid Cap Growth Fund
Fund
S000068519 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
|
22,189 | ||
| 5 |
FRED ALGER MANAGEMENT, LLC
13F
CIK 3520 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,272,871 | ||
| 5.1 |
ALGER SPECTRA FUND
Fund
S000009190 · Registered fund · Jul 31, 2026
ALGER FUNDS II, not summed
|
780,344 | ||
| 5.2 |
ALGER CAPITAL APPRECIATION INSTITUTIONAL FUND
Fund
S000009204 · Registered fund · Jul 31, 2026
ALGER INSTITUTIONAL FUNDS, not summed
|
336,207 | ||
| 5.3 |
ALGER CAPITAL APPRECIATION FUND
Fund
S000009163 · Registered fund · Jul 31, 2026
ALGER FUNDS, not summed
|
243,052 | ||
| 5.4 |
Alger Capital Appreciation Portfolio
Fund
S000009219 · Registered fund · Jun 30, 2026
ALGER PORTFOLIOS, not summed
|
93,374 | ||
| 5.5 |
Alger AI Enablers & Adopters ETF
Fund
S000084281 · Registered fund · Jun 30, 2026
Alger ETF Trust, not summed
|
63,291 | ||
| 6 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,617,598 | ||
| 7 |
Ninety One UK Ltd
13F
CIK 1418329 · Registered investment adviser · Sep 30, 2026
|
1,532,243 | ||
| 8 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,520,337 | ||
| 9 |
Balyasny Asset Management L.P.
13F
CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,472,078 | ||
| 10 |
Handelsbanken Fonder AB
13F
CIK 1398318 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,299,329 | ||
| 11 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,171,182 | ||
| 12 |
JENNISON ASSOCIATES LLC
13F
CIK 53417 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,168,757 | ||
| 13 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,035,722 | ||
| 14 |
BNP PARIBAS ASSET MANAGEMENT Holding S.A.
13F
CIK 1520354 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
996,354 | ||
| 15 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
923,813 | ||
| 16 |
Aventail Capital Group, LP
13F
CIK 1803822 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
853,960 | ||
| 17 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
843,525 | ||
| 18 |
SCOPUS ASSET MANAGEMENT, L.P.
13F
CIK 1317583 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
801,011 | ||
| 19 |
|
767,550 | ||
| 20 |
Yaupon Capital Management LP
13F
CIK 1755028 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
750,000 | ||
| 21 |
Electron Capital Partners, LLC
13F
CIK 1586986 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
749,386 | ||
| 22 |
Bridge Builder Small/Mid Cap Growth Fund
Fund
S000048336 · Registered fund · Jun 30, 2026
Bridge Builder Trust, not summed
|
744,305 | ||
| 23 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
737,119 | ||
| 24 |
FRANKLIN RESOURCES INC
13F
CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
715,343 | ||
| 24.1 |
Franklin Small Cap Growth Fund
Fund
S000006889 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
|
614,622 | ||
| 24.2 |
Franklin Alternative Strategies Fund
Fund
S000042023 · Registered fund · May 29, 2026
Franklin Alternative Strategies Funds, not summed
|
10,459 | ||
| 25 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
695,527 | ||
| 26 |
PGIM Jennison Utility Fund
Fund
S000004382 · Registered fund · May 29, 2026
Prudential Sector Funds, Inc., not summed
|
654,334 | ||
| 27 |
TimesSquare Capital Management, LLC
13F
CIK 1313816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
654,248 | ||
| 28 |
Point72 Asset Management, L.P.
13F
CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
590,476 | ||
| 29 |
Wealth High Governance Asset Management Ltda.
13F
CIK 2111728 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
579,148 | ||
| 30 |
DEUTSCHE BANK AG\
13F
CIK 948046 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
577,183 | ||
| 30.1 |
DWS Small Cap Core Fund
Fund
S000005709 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENT TRUST, not summed
|
244,865 | ||
| 30.2 |
DWS Small Cap Growth Fund
Fund
S000031150 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENT TRUST, not summed
|
43,423 | ||
| 30.3 |
DWS Small Mid Cap Growth VIP
Fund
S000006260 · Registered fund · Jun 30, 2026
DEUTSCHE DWS VARIABLE SERIES II, not summed
|
7,590 | ||
| 31 |
Federated Hermes Kaufmann Small Cap Fund
Fund
S000009730 · Registered fund · Jul 31, 2026
Federated Hermes Equity Funds, not summed
|
574,500 | ||
| 32 |
FEDERATED HERMES, INC.
13F
CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
574,500 | ||
| 33 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
566,274 | ||
| 34 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
560,700 | ||
| 35 |
Walleye Capital LLC
13F
CIK 1758720 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
553,432 | ||
| 36 |
NEUMEIER POMA INVESTMENT COUNSEL LLC
13F
CIK 1044936 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
538,040 | ||
| 37 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
528,625 | ||
| 37.1 |
Fidelity Mid Cap Index Fund
Fund
S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
147,576 | ||
| 37.2 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
107,001 | ||
| 37.3 |
Fidelity Nasdaq Composite Index Fund
Fund
S000055366 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
68,104 | ||
| 37.4 |
Fidelity Large Cap Growth Index Fund
Fund
S000054095 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
50,920 | ||
| 37.5 |
Fidelity Mid Cap Growth Index Fund
Fund
S000065748 · Registered fund · Jun 30, 2026
Fidelity Salem Street Trust, not summed
|
41,342 | ||
| 38 |
CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT
13F
CIK 1329375 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
520,000 | ||
| 39 |
LMR Partners LLP
13F
CIK 1578621 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
515,991 | ||
| 40 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
501,960 | ||
| 41 |
Ghisallo Capital Management LLC
13F
CIK 1825214 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
500,000 | ||
| 42 |
Pictet Asset Management Holding SA
13F
CIK 1993888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
497,283 | ||
| 43 |
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund
S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
483,941 | ||
| 44 |
Hood River Capital Management LLC
13F
CIK 1578177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
467,156 | ||
| 44.1 |
Hood River New Opportunities Fund
Fund
S000086255 · Registered fund · Jun 30, 2026
Manager Directed Portfolios, not summed
|
150,659 | ||
| 45 |
SOROS FUND MANAGEMENT LLC
13F
CIK 1029160 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
436,664 | ||
| 46 |
|
433,875 | ||
| 46.1 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
6,700 | ||
| 46.2 |
State Street(R) SPDR(R) Russell 1000 Low Volatility Focus ETF
Fund
S000051789 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
2,832 | ||
| 46.3 |
State Street(R) SPDR(R) Russell 1000 Momentum Focus ETF
Fund
S000051788 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
290 | ||
| 46.4 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
125 | ||
| 47 |
JPMorgan Small Cap Growth Fund
Fund
S000003859 · Registered fund · Jun 30, 2026
JPMorgan Trust II, not summed
|
424,387 | ||
| 48 |
BW Gestao de Investimentos Ltda.
13F
CIK 1568280 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
419,201 | ||
| 49 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
414,667 | ||
| 49.1 |
Goldman Sachs Small/Mid Cap Growth Fund
Fund
S000009322 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
154,356 | ||
| 49.2 |
Goldman Sachs Small Cap Growth Fund
Fund
S000061413 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
68,938 | ||
| 50 |
DISCOVERY CAPITAL MANAGEMENT, LLC / CT
13F
CIK 1389507 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
411,700 |
19 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 269 holders
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Key facts
CIK
2065636
CUSIP
78475V103
13F (30d)
24 filings
24 filers
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