Bondbloxx Ir+m Tax-Aware MasTAXMETF
13F holders, Q4 2025 (December 31)5holders +2
2new positions
0sold out
1famous investor
$50.26avg. 13F price*
At the end of Q4 2025, 5 institutions reported holding Bondbloxx Ir+m Tax-Aware Mas (TAXM) in their 13F filings, up 2 from Q3 2025. 2 opened new positions and 0 sold out. The largest holders were Income Research & Management ($5.0M), Jane Street Group, LLC ($954K) and Citadel Advisors ($682K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Bondbloxx Ir+m Tax-Aware Mas
- CUSIP
- 09789C697
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $693K |
| Exits | 0 | $0 |
All 13F filers, Q3 2025 → Q4 2025: 26,443 shares bought, net +26,443 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 5 holders
| Income Research & Management | 2.66% | No change | 100,000 | $5.0M |
| Jane Street Group, LLC | 0.00% | Add +82.8% | 18,988 | $954K |
| Citadel Advisors | 0.00% | Add +42.7% | 13,560 | $682K |
| Goldman Sachs Group Inc. | 0.00% | New | 7,695 | $387K |
| Plum Street Advisors, LLC | 0.11% | New | 6,091 | $306K |
"% of holder's portfolio" is TAXM's weight in each manager's 13F, not the share of Bondbloxx Ir+m Tax-Aware Mas the manager owns.