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HomeStocksHTOOInstitutional Holders

HTOO logoFusion Fuel Green PLC (HTOO) Institutional Ownership

Q2 2026 13F Data|Updated 2026-11-07

✨

Institutional ownership increased this quarter (+0.93 pp), though top 10 holders maintain a highly concentrated 100.0% of institutional value.

Institutional Ownership
Can exceed 100% due to securities lending, short interest, and reporting timing differences.
1.2%$58K total value · ▲ +0.93 pp vs prior quarter
Smart Money Score
Based on ownership concentration, fund quality, buying/selling activity, ownership indicators, and institutional trend.
63 / 100Bullish
Institutions & Flow10 holders+2 net flow (+3 / -1)

AI Insights & Key Takeaways

  • Positive Institutional Flow (+2)
  • Citadel Advisors Llc maintains a significant position
  • Top 10 holders control 100.0% of institutional value
  • No Insider Signal

Top Institutional Holders of HTOO

Ranked by reported Q2 2026 13F market value

Top 10 Holders
100.0%
Top 25 Holders
100.0%

Share of total reported institutional value in HTOO held by the largest 10 / 25 filers.

#InstitutionShares HeldMarket ValueQoQ ChangeOwnership %% of Fund
1CITADEL ADVISORS LLC18K$47K—0.977%0.00%
2UBS Group AG3K$8K-21.9%0.161%0.00%
3MORGAN STANLEY

Quarterly Institutional Activity

Filings activity in HTOO during Q2 2026, grouped by how each filer changed its position.

OverviewNew Buyers3Added To0Trimmed4Exited1
  • CITADEL ADVISORS LLC$47K
  • Ameritas Advisory Services, LLC$40
  • ASSETMARK, INC

HTOO Institutional Ownership by Quarter

8 quarters of 13F filings · Δ columns show change vs prior quarter

QuarterInst. HoldersΔ HoldersOwnership %Δ OwnershipTotal 13F ValueΔ Value
Q2 202610+25%1.20%+0.93 pp$0M+323%
Q1 2026820%0.27%+0.04 pp$0M+0.5%
Q4 20251023%0.23%+0.18 pp$0M+233%
Q3 20251313%0.05%0.52 pp$0M94%
Q2 2025156.3%0.57%+0.27 pp$0M+47%
Q1 20251616%

HTOO — Frequently Asked Questions

Quick answers to the most common questions about buying HTOO stock.

What percentage of HTOO is owned by institutions?

Based on Q2 2026 13F filings, institutional ownership of Fusion Fuel Green PLC stands at 1.2%, held across 10 reporting institutions.

Who is the largest institutional holder of HTOO?

CITADEL ADVISORS LLC is the largest reported institutional holder of HTOO, with approximately 17,682 shares worth $0.00B as of Q2 2026.

Is HTOO a hedge fund favorite?

Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of HTOO, including CITADEL ADVISORS LLC.

What is HTOO's Smart Money Score?

Our composite Smart Money Score for HTOO is 63 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

How many institutions bought HTOO this quarter?

3 institutions opened new positions in HTOO during Q2 2026, while 1 fully exited. 0 added to existing positions and 4 trimmed.

1K
$3K
0.0%
0.056%
0.00%
4SBI Securities Co., Ltd.99$2620.0%0.006%0.00%
5Ameritas Advisory Services, LLC15$40—0.001%0.00%
6CREATIVE FINANCIAL DESIGNS INC /ADV11$290.0%0.001%0.00%
7NATIONAL BANK OF CANADA /FI/7$190.0%0.000%0.00%
8ASSETMARK, INC6$16—0.000%0.00%
9JONES FINANCIAL COMPANIES LLLP3$80.0%0.000%0.00%
10GROUP ONE TRADING LLC1$30.0%0.000%0.00%

denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in HTOO — a direct measure of their conviction.

$16
0.30%
0.29 pp
$0M
77%
Q4 2024199.5%0.59%3.77 pp$0M85%
Q3 202421—4.36%—$1M—

Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.

How is institutional ownership of HTOO changing?

HTOO institutional ownership rose by 0.93 percentage points quarter-over-quarter, with a net change of +2 holders.

How concentrated is HTOO ownership among the top holders?

The top 10 institutions account for 100.0% of all reported 13F value in HTOO, and the top 25 account for 100.0%.

Where does this HTOO institutional ownership data come from?

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.

HTOOFusion Fuel Green PLC
$1.31$2M
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