# INVESTMENT MANAGERS SER TR I (BLSX)

> Institutional ownership reported to the SEC as of Q4 2025, from Form 13F filings. Source: https://holderbook.com/stocks/BLSX/

- Reporting holders: 2
- Reported value: $306.5K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Optiver Holding B.V.](https://holderbook.com/funds/1859606-optiver-holding-b-v/) | $303.5K | 26,647 | 0.0% | 1 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $3.0K | 263 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q4 2025 | 2 | $306.5K |