# QUANTUMSPHERE ACQUISITION CO ORD SHS

QUANTUMSPHERE ACQUISITION CO ORD SHS is a security (CUSIP G7387B106) tracked across SEC portfolio filings. 29 institutional managers reported $72.2M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $3.0M via N-PORT as of 2026-03-31.

## Summary

- Issuer: QUANTUMSPHERE ACQUISITION CO
- Class: ORD SHS
- CUSIP: G7387B106
- Asset category: EC
- 13F holders: 29
- 13F value: $72.2M
- 13F period: 2026-06-30
- N-PORT fund positions: 2
- N-PORT value: $3.0M
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 29 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| MIZUHO SECURITIES USA LLC | NEW YORK, NY | $7.7M | 757,023 |
| [WOLVERINE ASSET MANAGEMENT LLC](https://search.stillhousedata.com/firm/138907) | CHICAGO, IL | $6.1M | 603,984 |
| BERKLEY W R CORP | Greenwich, CT | $5.1M | 508,540 |
| Karpus Management, Inc. | Pittsford, NY | $5.0M | 493,875 |
| [Shaolin Capital Management LLC](https://search.stillhousedata.com/firm/300095) | MIAMI, FL | $4.9M | 480,000 |
| [RIVERNORTH CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/122020) | WEST PALM BEACH, FL | $4.3M | 424,512 |
| D. E. Shaw & Co., Inc. | New York, NY | $4.1M | 409,860 |
| [Polar Asset Management Partners Inc.](https://search.stillhousedata.com/firm/162681) | TORONTO, A6 | $4.0M | 400,000 |
| Linden Advisors LP | New York, NY | $4.0M | 400,000 |
| [AQR Arbitrage LLC](https://search.stillhousedata.com/firm/114626) | Greenwich, CT | $3.1M | 308,294 |
| HGC Investment Management Inc. | TORONTO, A6 | $3.0M | 300,000 |
| TORONTO DOMINION BANK | Toronto, Ontario, A6 | $2.7M | 265,600 |
| [Westchester Capital Management, LLC](https://search.stillhousedata.com/firm/155686) | VALHALLA, NY | $2.5M | 250,000 |
| Hudson Bay Capital Management LP | Greenwich, CT | $2.4M | 235,000 |
| Clear Street Group Inc. | NEW YORK, NY | $1.8M | 175,001 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| First Trust Alternative Opportunities Fund | First Trust Alternative Opportunities Fund | $2.0M | 5.88% |
| RiverNorth Opportunities Fund Inc. | RIVERNORTH OPPORTUNITIES FUND INC. | $1.0M | 31.22% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/G7387B106.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.