Mariner’s 374Water SCWO Stock Holding History

Mariner’s Portfolio SCWO Stock Details SCWO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$36.2K	Buy	19,075 +1,000	+6%	+$2.53K	﹤0.01%	3443
2026 Q1	$51.3K	Hold	18,075	–	–	﹤0.01%	3421
2025 Q4	$36.9K	Sell	18,075 -2,000	-10%	-$6.77K	﹤0.01%	3444
2025 Q3	$57.6K	Buy	20,075 +1,987	+11%	+$5.44K	﹤0.01%	3436
2025 Q2	$58.7K	Buy	18,088 +8	+0%	+$27	﹤0.01%	3324
2025 Q1	$61.5K	Buy	18,080 +5	+0%	+$22	﹤0.01%	3272
2024 Q4	$123K	Sell	18,075 -218	-1%	-$2.69K	﹤0.01%	3135
2024 Q3	$249K	Buy	18,293 +118	+0.6%	+$1.43K	﹤0.01%	2736
2024 Q2	$218K	Hold	18,175	–	–	﹤0.01%	2726
2024 Q1	$229K	Buy	18,175 +12,075	+198%	+$156K	﹤0.01%	2653
2023 Q4	$86.6K	Sell	6,100 -2,500	-29%	-$33.4K	﹤0.01%	2875
2023 Q3	$107K	Buy	8,600 +2,500	+41%	+$41.9K	﹤0.01%	2667
2023 Q2	$146K	Hold	6,100	–	–	﹤0.01%	2557
2023 Q1	$288K	Buy	6,100 +3,904	+178%	+$134K	﹤0.01%	2105
2022 Q4	$63K	Hold	2,196	–	–	﹤0.01%	2587
2022 Q3	$62K	Buy	+2,196	New	+$64.2K	﹤0.01%	2287

Other funds holding SCWO

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

CAPTRUST Financial Advisors Raleigh, North Carolina $65.5B AUM 24.25% 1-Year Est. Return

HLA

Hamilton Lane Advisors Conshohocken, Pennsylvania $149M AUM 14.17% 1-Year Est. Return

DADC

D.A. Davidson & Co Great Falls, Montana $18.1B AUM 24.63% 1-Year Est. Return

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

IWA

Icon Wealth Advisors Houston, Texas $1.66B AUM 24.99% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return

SPC

Sigma Planning Corp Ann Arbor, Michigan $3.97B AUM 32.34% 1-Year Est. Return

Mariner's SCWO Position: Q2 2026 in Review

Mariner increased its 374Water (SCWO) stake by 5.5% in Q2 2026, buying an estimated $2.53K and bringing the position to 19,075 shares worth $36.2K. The position accounts for ﹤0.01% of the portfolio, ranked #3443.

Mariner first reported a position in SCWO in Q3 2022 and has held it in 16 quarters since. The position peaked at $288K in Q1 2023. 44 funds tracked by Wall St. Rank hold SCWO as of Q2 2026.

Mariner held 19,075 shares of 374Water worth $36.2K as of Q2 2026.
Mariner bought 1,000 374Water shares in Q2 2026, an estimated $2.53K.
374Water made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3443 holding.
Mariner first reported a position in 374Water in Q3 2022 and has held it in 16 quarters since.
Mariner's 374Water position peaked at $288K in Q1 2023.
44 funds tracked by Wall St. Rank held 374Water as of Q2 2026.

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