Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
367 institutional managers reported holding TXNM for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 52%. 41 opened new positions; 44 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 13.36M | 11.84% | $781.0M | added +0.7% | ≤2013 |
| Vanguard Group | 12.10M | 10.72% | $707.5M | added +1.6% | ≤2013 |
| Blackstone | 8.00M | 7.09% | $467.6M | unchanged | 2025 Q2 |
| Balyasny Asset Management | 7.13M | 6.32% | $417.0M | added +108.9% | 2021 Q4 |
| State Street | 3.88M | 3.44% | $227.0M | added +2.8% | ≤2013 |
| Millennium Management | 3.53M | 3.13% | $206.3M | added +20.4% | ≤2013 |
| HBK Investments L P | 3.04M | 2.69% | $177.8M | added +79.2% | 2025 Q4 |
| Pentwater Capital Management LP | 2.80M | 2.48% | $163.7M | added +69.6% | 2025 Q2 |
| Geode Capital | 2.79M | 2.47% | $163.2M | added +8.6% | ≤2013 |
| Goldman Sachs | 2.34M | 2.07% | $136.8M | added +21.1% | ≤2013 |
| UBS | 2.25M | 1.99% | $131.5M | added +44.7% | ≤2013 |
| AQR Capital | 1.86M | 1.65% | $108.9M | added +46.8% | ≤2013 |
| Zimmer Partners, LP | 1.53M | 1.36% | $89.6M | trimmed -17.7% | 2023 Q4 |
| Healthcare OF Ontario Pension Plan Trust Fund | 1.52M | 1.35% | $88.8M | added +420.4% | 2025 Q3 |
| Morgan Stanley | 1.48M | 1.31% | $86.4M | added +103.3% | ≤2013 |
| Magnetar Financial LLC | 1.48M | 1.31% | $86.2M | trimmed -13.2% | 2025 Q2 |
| Empyrean Capital Partners, LP | 1.44M | 1.28% | $84.3M | unchanged | 2023 Q4 |
| Verition Fund Management | 1.35M | 1.19% | $78.8M | added +55.6% | 2021 Q1 |
| Qube Research & Technologies LTD | 1.25M | 1.11% | $73.2M | added +29.4% | 2025 Q2 |
| Charles Schwab Investment Management | 1.23M | 1.09% | $72.1M | added +1.2% | ≤2013 |
| Northern Trust | 1.13M | 1.00% | $66.1M | trimmed -5% | ≤2013 |
| AllianceBernstein | 1.09M | 0.97% | $63.8M | added +9.9% | ≤2013 |
| Melqart Asset Management (UK) LTD (focused) | 1.05M | 0.93% | $61.4M | added +33% | 2025 Q3 |
| Invesco | 919.8k | 0.81% | $53.8M | trimmed -17.9% | ≤2013 |
| GAMCO (Gabelli) | 893.7k | 0.79% | $52.2M | added +2.1% | ≤2013 |
| Alberta Investment Management CORP | 891.4k | 0.79% | $52.1M | added +45.7% | 2025 Q2 |
| Adage Capital Partners GP, L.l.c. | 857.2k | 0.76% | $50.1M | trimmed -3% | 2023 Q2 |
| Franklin Resources | 818.1k | 0.72% | $47.8M | unchanged | ≤2013 |
| Hudson Bay Capital | 792.1k | 0.70% | $46.3M | trimmed -2% | 2020 Q4 |
| Gamco Investors, INC. et al | 755.3k | 0.67% | $44.2M | trimmed -2.3% | ≤2013 |
| BNY Mellon | 753.3k | 0.67% | $44.0M | trimmed -3.1% | ≤2013 |
| Marshall Wace | 716.8k | 0.64% | $41.9M | added +4% | 2025 Q1 |
| LMR Partners LLP | 698.5k | 0.62% | $40.8M | added +3.9% | 2025 Q2 |
| Caxton Associates LLP | 695.6k | 0.62% | $40.7M | opened | 2026 Q1 |
| Hsbc Holdings PLC | 685.4k | 0.61% | $40.1M | added +3840.9% | 2024 Q3 |
| Water Island Capital LLC | 674.9k | 0.60% | $39.4M | added +17.1% | 2025 Q2 |
| Sand Grove Capital Management LLP (focused) | 662.1k | 0.59% | $38.7M | added +11% | 2025 Q2 |
| Dimensional Fund Advisors | 631.3k | 0.56% | $36.9M | trimmed -58.6% | ≤2013 |
| First Trust Advisors LP | 583.7k | 0.52% | $34.1M | trimmed -3.6% | ≤2013 |
| D. E. Shaw | 565.9k | 0.50% | $33.1M | trimmed -60.2% | 2025 Q2 |
| Nexpoint Asset Management, L.p. | 540.2k | 0.48% | $31.6M | added +7.3% | 2023 Q1 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 515.7k | 0.46% | $30.1M | trimmed -30.9% | 2025 Q2 |
| Alpine Associates Management INC. | 512.1k | 0.45% | $29.9M | added +1% | 2025 Q2 |
| Readystate Asset Management LP | 456.4k | 0.40% | $26.7M | unchanged | 2025 Q3 |
| Legal & General Group PLC | 446.0k | 0.40% | $26.1M | trimmed -8.6% | 2015 Q3 |
| Governors Lane LP | 444.4k | 0.39% | $26.0M | trimmed -50.7% | 2025 Q2 |
| FMR (Fidelity) | 427.9k | 0.38% | $25.0M | trimmed -45.4% | ≤2013 |
| Segall Bryant & Hamill, LLC | 414.9k | 0.37% | $24.3M | trimmed -4.6% | 2015 Q4 |
| Woodline Partners LP | 413.8k | 0.37% | $24.2M | trimmed -4.4% | 2025 Q2 |
| Squarepoint Ops LLC | 373.9k | 0.33% | $21.9M | added +11.9% | 2022 Q1 |
Largest 50 of 367 shown; the full ranked, searchable register is at boothcheck.com/holders/TXNM. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.