Horizon Quantum Holdings Ltd.: which funds bought and sold

Institutions that bought and sold Horizon Quantum Holdings shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 30 institutions that filed 13F reports for both quarters added to or opened positions in Horizon Quantum Holdings, and 7 cut or closed them. Together they added a net 17.6M shares, +986.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 378K shares (−91.9%); index fund managers were net buyers of 57K shares. 25 opened a new position and 6 sold out entirely.

Bought, Q2 2026 30 institutions, 25 of them new holders Sold, Q2 2026 7 institutions, 6 of them sold out

Net change, all compared +17.6M shares (+986.5%)

Net change, active managers −378K shares (−91.9%), 2 bought, 2 sold

Buyers versus sellers

institutions compared, 40

30 bought 3 7 sold

Active managers and hedge funds 2 bought · 2 sold · −378K

Index fund managers 3 bought · 0 sold · +57K

Other institutions 25 bought · 5 sold · +17.9M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Peak Xv Partners Operations LLC	+6.4M New position	6.4M	$176M
Defiance Etfs, LLC	+5.6M New position	5.6M	$151M
Penserra Capital Management LLC	+5.5M New position	5.5M	$152M
UBS Group AG	+176K +250.2%	246K	$6.8M
Creek Drive Management Group LLC	+90K New position	90K	$2.5M
Bank Of America Corp	+66K New position	66K	$1.8M
Goldman Sachs Group Inc	+65K New position	65K	$1.8M
Van Eck Associates Corp	+44K New position	44K	$1.2M
Northern Trust Corp Index funds	+38K New position	38K	$1.1M
K2 Principal Fund, L.P.	+34K New position	34K	$943,840
HRT Financial LP	+33K +250.3%	46K	$1.3M
Exoduspoint Capital Management, LP Hedge fund	+19K New position	19K	$524,803
Jane Street Group, LLC	+18K New position	18K	$502,206
Tidal Investments LLC	+18K New position	18K	$498,153
Geode Capital Management, LLC Index funds	+18K New position	18K	$493,156
Engineers Gate Manager LP Hedge fund	+14K New position	14K	$396,135
Dld Asset Management, LP	+13K +45.5%	40K	$1.1M
Us Bancorp	+10K New position	10K	$285,456
T3 Companies, LLC	+8,876 New position	8,876	$246,398
Virtu Financial LLC	+8,196 New position	8,196	$228,000

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Exoduspoint Capital Management, LP Hedge fund	+19K New position	19K	$524,803
Engineers Gate Manager LP Hedge fund	+14K New position	14K	$396,135

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	−251K Sold out	0	—
Hudson Bay Capital Management LP Hedge fund	−160K Sold out	0	—
Meteora Capital, LLC	−54K Sold out	0	—
Shay Capital LLC	−31K −77.1%	9,152	$254,060
Lineage Point Capital LP	−16K Sold out	0	—
Eversource Wealth Advisors, LLC	−1,000 Sold out	0	—
Federation Des Caisses Desjardins Du Quebec	−700 Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	−251K Sold out	0	—
Hudson Bay Capital Management LP Hedge fund	−160K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Peak Xv Partners Operations LLC	6.4M	$176M
Penserra Capital Management LLC	5.5M	$152M
Defiance Etfs, LLC	5.6M	$151M
Creek Drive Management Group LLC	90K	$2.5M
Bank Of America Corp	66K	$1.8M
Goldman Sachs Group Inc	65K	$1.8M
Van Eck Associates Corp	44K	$1.2M
Northern Trust CorpIndex funds	38K	$1.1M
K2 Principal Fund, L.P.	34K	$943,840
Exoduspoint Capital Management, LPHedge fund	19K	$524,803

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Citadel Advisors LLCHedge fund	251K	$2.2M
Hudson Bay Capital Management LPHedge fund	160K	$1.4M
Meteora Capital, LLC	54K	$477,842
Lineage Point Capital LP	16K	$140,640
Eversource Wealth Advisors, LLC	1,000	$8,790
Federation Des Caisses Desjardins Du Quebec	700	$6,153

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 34
Ten largest holders: 98.4%
Index fund managers: 0.3%
Active managers and hedge funds: 0.2%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	2	2	2	2	−378K	−91.9%
Index fund managers	3	0	3	0	+57K	—
Other institutions	25	5	20	4	+17.9M	+1306.4%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Horizon Quantum Holdings.

Only managers that filed a holdings report for both quarters are compared (40 here). 1 other holder is left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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