# THEMES ETF TR (BULG)

> Institutional ownership reported to the SEC as of Q1 2026, from Form 13F filings. Source: https://holderbook.com/stocks/BULG/

- Reporting holders: 7
- Reported value: $267.1K
- Held through calls: 4.2%
- Held through puts: 7.3%

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/) | $165.5K | 159,155 | 0.0% | 3 |
| [CITADEL ADVISORS LLC](https://holderbook.com/funds/1423053-citadel-advisors-llc/) | $44.7K | 24,235 | 0.0% | 3 |
| [SUSQUEHANNA INTERNATIONAL GROUP, LLP](https://holderbook.com/funds/1446194-susquehanna-international-group-llp/) | $20.0K | 19,221 | 0.0% | 2 |
| [TWO SIGMA SECURITIES, LLC](https://holderbook.com/funds/1450144-two-sigma-securities-llc/) | $14.3K | 13,749 | 0.0% | 2 |
| [XTX Topco Ltd](https://holderbook.com/funds/1828301-xtx-topco-ltd/) | $11.2K | 10,812 | 0.0% | 1 |
| [Belvedere Trading LLC](https://holderbook.com/funds/1632341-belvedere-trading-llc/) | $11.2K | 0 | 0.0% | 1 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $125 | 121 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2026 | 7 | $267.1K |
| Q4 2025 | 6 | $782.3K |
| Q3 2025 | 3 | $259.2K |