Marshall Wace’s H2O America HTO Stock Holding History

Marshall Wace’s Portfolio HTO Stock Details HTO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$534K	Buy	+8,791	New	+$510K	﹤0.01%	2489
2025 Q4	–	Sell	-165,543	Closed	-$8.06M	–	3433
2025 Q3	$8.06M	Sell	165,543 -342,025	-67%	-$17.1M	0.01%	999
2025 Q2	$26.4M	Buy	507,568 +237,069	+88%	+$12.6M	0.03%	487
2025 Q1	$14.8M	Buy	+270,499	New	+$13.8M	0.02%	620
2024 Q4	–	Sell	-9,108	Closed	-$529K	–	2968
2024 Q3	$529K	Buy	+9,108	New	+$533K	﹤0.01%	1906
2024 Q1	–	Sell	-3,154	Closed	-$206K	–	2776
2023 Q4	$206K	Sell	3,154 -10,628	-77%	-$674K	﹤0.01%	1972
2023 Q3	$828K	Buy	+13,782	New	+$925K	﹤0.01%	1565
2021 Q2	–	Sell	-63,509	Closed	-$4M	–	3046
2021 Q1	$4M	Buy	+63,509	New	+$4.14M	0.02%	959
2019 Q4	–	Sell	-757	Closed	-$52K	–	2022
2019 Q3	$52K	Buy	+757	New	+$49.7K	﹤0.01%	1485
2019 Q2	–	Sell	-15,762	Closed	-$973K	–	1793
2019 Q1	$973K	Sell	15,762 -12,562	-44%	-$754K	0.01%	936
2018 Q4	$1.58M	Buy	+28,324	New	+$1.68M	0.02%	788

Other funds holding HTO

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AIP

Atlas Infrastructure Partners London, United Kingdom $3.3B AUM 16.21% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Antipodes Partners Royal Exchange, Australia $5.46B AUM 26.64% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Cerity Partners New York $82.7B AUM 28.53% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

SFM

Soros Fund Management New York $8.14B AUM 35.85% 1-Year Est. Return

Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return

Marshall Wace's HTO Position: Q2 2026 in Review

Marshall Wace opened a new position in H2O America (HTO) in Q2 2026: 8,791 shares worth $534K. The stake represents ﹤0.01% of the portfolio and ranks #2489 among its holdings. This is a return to the name: Marshall Wace previously reported a position in HTO as recently as Q3 2025.

Marshall Wace first reported a position in HTO in Q4 2018 and has held it in 11 quarters since. The position peaked at $26.4M in Q2 2025. 314 funds tracked by Wall St. Rank hold HTO as of Q2 2026.

Marshall Wace held 8,791 shares of H2O America worth $534K as of Q2 2026.
H2O America was a new Marshall Wace position in Q2 2026.
H2O America made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #2489 holding.
Marshall Wace first reported a position in H2O America in Q4 2018 and has held it in 11 quarters since.
Marshall Wace's H2O America position peaked at $26.4M in Q2 2025.
314 funds tracked by Wall St. Rank held H2O America as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.