H2O AMERICA - Common Stock, par value $0.001 per share (HTO) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.001 per share
Symbol
HTO on Nasdaq
Underlying class
Common Stock
Shares outstanding
35,291,680
Price per share
$48.99
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
28,889,090
Total reported value
$1,406,197,705
% of total 13F portfolios
0%
Share change
+962,120
Value change
+$44,695,194
Number of holders
276
Price from insider filings
$48.99
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of H2O AMERICA - Common Stock, par value $0.001 per share (HTO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 17% -12% $305,760,678 -$37,630,836 5,623,702 -11% BlackRock, Inc. 31 Mar 2025
Amundi 6.2% +5.7% $106,387,828 +$9,076,414 2,184,555 +9.3% AMUNDI 30 Sep 2025
STATE STREET CORP 4% -28% $73,260,965 -$25,246,166 1,347,452 -26% STATE STREET CORPORATION 31 Mar 2025

As of 30 Sep 2025, 276 institutional investors reported holding 28,889,090 shares of H2O AMERICA - Common Stock, par value $0.001 per share (HTO). This represents 82% of the company’s total 35,291,680 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of H2O AMERICA - Common Stock, par value $0.001 per share (HTO) together control 65% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 18% 6,242,044 +2.6% 0.01% $303,987,549
VANGUARD GROUP INC 7.5% 2,654,093 -0.32% 0% $129,254,330
Amundi 6.2% 2,184,942 +78% 0.03% $105,964,882
Cerity Partners LLC 4.1% 1,448,347 +0.48% 0.11% $70,534,481
FIRST TRUST ADVISORS LP 3.7% 1,315,455 +12% 0.05% $64,062,652
STATE STREET CORP 3.7% 1,299,974 +1.3% 0% $63,308,734
NUANCE INVESTMENTS, LLC 2.9% 1,021,922 +5.9% 5.1% $49,767,610
GEODE CAPITAL MANAGEMENT, LLC 2.3% 819,441 +5.6% 0% $39,912,126
DIMENSIONAL FUND ADVISORS LP 1.8% 651,703 -1.6% 0.01% $31,736,644
MORGAN STANLEY 1.7% 613,465 -3.8% 0% $29,875,849
Invesco Ltd. 1.6% 569,881 -3.2% 0% $27,753,205
Legal & General Group Plc 1.6% 561,020 +15% 0.01% $27,312,586
VICTORY CAPITAL MANAGEMENT INC 1.2% 437,773 +16% 0.01% $21,319,545
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.2% 420,042 +1.7% 0% $20,456,045
KBC Group NV 1.2% 417,891 +0.63% 0.05% $20,351,000
NORTHERN TRUST CORP 1% 356,460 +2.3% 0% $17,359,603
Bank of New York Mellon Corp 0.88% 308,815 -11% 0% $15,039,278
GOLDMAN SACHS GROUP INC 0.85% 301,371 +4.2% 0% $14,676,768
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.72% 253,233 +12% 0.04% $12,332,447
Nuveen, LLC 0.69% 243,869 -10% 0% $11,876,421
JPMORGAN CHASE & CO 0.61% 216,747 +46% 0% $10,555,578
CIBC Private Wealth Group LLC 0.52% 183,631 -35% 0.02% $8,942,830
MARSHALL WACE, LLP 0.47% 165,543 -67% 0.01% $8,061,944
Assenagon Asset Management S.A. 0.46% 161,189 +1004% 0.01% $7,849,904
PRINCIPAL FINANCIAL GROUP INC 0.45% 158,397 +2.7% 0% $7,713,934

Institutional Holders of H2O AMERICA - Common Stock, par value $0.001 per share (HTO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 532,093 $26,086,210 +$6,194,674 $48.99 24
2025 Q3 28,889,090 $1,406,197,705 +$44,695,194 $48.70 276
2025 Q2 27,898,947 $1,452,805,897 +$34,174,095 $51.97 259
2025 Q1 27,199,537 $1,484,543,749 +$52,240,243 $54.69 248
2024 Q4 26,231,448 $1,290,435,175 +$30,041,870 $49.22 235
2024 Q3 25,573,979 $1,485,569,441 +$22,088,974 $58.11 246
2024 Q2 24,872,799 $1,348,428,325 +$7,992,839 $54.22 228
2024 Q1 24,719,770 $1,398,028,279 +$9,246,656 $56.59 223
2023 Q4 24,493,919 $1,600,225,456 +$119,183 $65.35 226
2023 Q3 24,496,783 $1,472,599,553 -$42,928,998 $60.11 220
2023 Q2 25,185,036 $1,766,308,449 -$41,364,140 $70.11 216
2023 Q1 25,696,874 $1,956,843,769 +$31,339,758 $76.13 208
2022 Q4 25,289,718 $2,052,950,547 +$390,540,587 $81.19 210
2022 Q3 22,102,197 $1,273,836,887 -$82,518,404 $57.60 174
2022 Q2 21,956,965 $1,370,245,733 +$19,954,879 $62.41 176
2022 Q1 21,597,472 $1,499,638,629 -$4,605,160 $69.58 176
2021 Q4 21,650,168 $1,583,939,392 -$40,386,042 $73.20 176
2021 Q3 22,264,362 $1,470,805,417 +$62,659,454 $66.06 154
2021 Q2 21,319,763 $1,349,767,182 +$968,642 $63.30 142
2021 Q1 21,201,218 $1,334,934,574 +$61,528,614 $62.99 157
2020 Q4 20,122,765 $1,393,973,027 +$5,449,532 $69.36 159
2020 Q3 20,027,998 $1,218,577,981 -$7,051,224 $60.86 156
2020 Q2 20,150,756 $1,250,646,550 +$47,432,648 $62.11 158
2020 Q1 19,416,130 $1,122,425,565 -$28,161,543 $57.77 161
2019 Q4 19,846,863 $1,409,296,959 +$35,094,219 $71.06 165
2019 Q3 19,371,198 $1,322,918,854 +$1,594,551 $68.29 173
2019 Q2 19,372,449 $1,177,282,248 -$2,498,684 $60.77 160
2019 Q1 19,562,202 $1,207,902,653 +$49,564,577 $61.74 167
2018 Q4 18,836,285 $1,047,776,787 +$385,452,794 $55.62 176
2018 Q3 11,689,397 $714,708,949 -$31,313,980 $61.15 143
2018 Q2 12,011,108 $795,376,744 +$39,203,225 $66.22 142
2018 Q1 11,725,625 $618,076,787 +$15,527,449 $52.71 154
2017 Q4 11,412,862 $728,400,027 +$6,313,748 $63.83 153
2017 Q3 11,317,358 $640,842,793 +$111,289,699 $56.60 147
2017 Q2 9,398,664 $462,351,191 +$6,722,009 $49.18 140
2017 Q1 9,252,744 $446,095,595 +$55,776,960 $48.22 144
2016 Q4 9,136,055 $511,318,689 -$1,833,397 $55.98 147
2016 Q3 9,462,160 $413,065,644 +$10,744,055 $43.68 127
2016 Q2 9,244,811 $364,027,643 +$3,897,789 $39.38 133
2016 Q1 9,193,992 $334,295,525 +$3,216,489 $36.35 139
2015 Q4 9,107,298 $270,253,899 -$5,030,793 $29.65 113
2015 Q3 9,268,001 $284,929,112 -$52,692,251 $30.75 116
2015 Q2 10,999,241 $337,551,246 -$836,406 $30.69 115
2015 Q1 11,030,672 $341,008,440 -$2,456,498 $30.91 122
2014 Q4 11,093,351 $356,464,911 -$1,147,491 $32.12 112
2014 Q3 10,880,425 $292,360,551 +$2,011,955 $26.87 98
2014 Q2 10,803,885 $293,654,271 -$2,698,708 $27.20 100
2014 Q1 10,895,315 $322,672,327 +$3,529,633 $29.56 89