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Institutional Ownership · SEC Form 13F

Who owns TXNM Energy (TXNM)


Which tracked institutional funds hold TXNM, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TXNM company fundamentals →

Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

361
Institutional holders
111M
Shares held (tracked funds)

How the tape is positioned

78 tracked funds added or opened TXNM while 100 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

TXNM’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes TXNM more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in TXNM divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2026-Q1 and 2026-Q2, across 360 tracked filers holding TXNM, 190 increased or opened the position and 180 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in TXNM between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 20

  • NORGES BANK$129M
  • RENAISSANCE TECHNOLOGIES LLC$37M
  • Calamos Advisors LLC$22M
  • Trexquant Investment LP$15M
  • PSquared Asset Management AG$15M
  • Nearwater Capital Markets, Ltd$13M

Full exits 31

  • Zimmer Partners, LP$90M
  • CIBRA Capital Ltd$17M
  • Athos Capital Ltd$9M
  • Capricorn Fund Managers Ltd$9M
  • Aberdeen Group plc$9M
  • New York Life Investment Management LLC$9M

Largest adds

  • Pentwater Capital Management LP$205M
  • BlackRock, Inc.$155M
  • Qube Research & Technologies Ltd$45M
  • Governors Lane LP$35M
  • Invesco Ltd.$22M
  • Melqart Asset Management (UK) Ltd$16M

Largest trims

  • HBK INVESTMENTS L P$150M
  • UBS Group AG$73M
  • HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$68M
  • MILLENNIUM MANAGEMENT LLC$66M
  • JPMORGAN CHASE & CO$51M
  • Empyrean Capital Partners, LP$38M

Institutional holders

One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.

FundSharesReported value% of valueQuarter
BlackRock, Inc. added14,595,837$829M13.7%2026-Q2
Blackstone Inc.8,000,000$454M7.5%2026-Q2
BALYASNY ASSET MANAGEMENT L.P. trimmed7,113,061$404M6.7%2026-Q2
VANGUARD PORTFOLIO MANAGEMENT LLC added6,740,196$383M6.3%2026-Q2
Pentwater Capital Management LP added6,487,500$368M6.1%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC added4,842,279$275M4.6%2026-Q2
STATE STREET CORP added4,124,968$234M3.9%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC added2,996,464$170M2.8%2026-Q2
MILLENNIUM MANAGEMENT LLC trimmed2,470,809$140M2.3%2026-Q2
NORGES BANK trimmed2,264,722$129M2.1%2026-Q2
GOLDMAN SACHS GROUP INC trimmed2,206,304$125M2.1%2026-Q2
Qube Research & Technologies Ltd added2,084,253$118M2.0%2026-Q2
AQR Arbitrage LLC added1,812,443$103M1.7%2026-Q2
MORGAN STANLEY added1,583,353$90M1.5%2026-Q2
Magnetar Financial LLC trimmed1,448,220$82M1.4%2026-Q2
Melqart Asset Management (UK) Ltd added1,370,244$78M1.3%2026-Q2
ALLIANCEBERNSTEIN L.P. added1,328,638$78M1.3%2026-Q2
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added1,262,285$72M1.2%2026-Q2
NORTHERN TRUST CORP added1,208,968$69M1.1%2026-Q2
Invesco Ltd. added1,203,808$68M1.1%2026-Q2
Verition Fund Management LLC trimmed1,203,109$68M1.1%2026-Q2
Governors Lane LP added1,079,170$61M1.0%2026-Q2
LMR Partners LLP added943,488$54M0.9%2026-Q2
GABELLI FUNDS LLC added933,521$53M0.9%2026-Q2
MARSHALL WACE, LLP added889,956$51M0.8%2026-Q2
HSBC HOLDINGS PLC added889,385$51M0.8%2026-Q2
Hudson Bay Capital Management LP added888,032$50M0.8%2026-Q2
Empyrean Capital Partners, LP trimmed812,554$46M0.8%2026-Q2
NEXPOINT ASSET MANAGEMENT, L.P. added811,090$46M0.8%2026-Q2
UBS Group AG trimmed803,015$46M0.8%2026-Q2
ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed791,704$45M0.7%2026-Q2
Alberta Investment Management Corp trimmed791,387$45M0.7%2026-Q2
GAMCO INVESTORS, INC. ET AL trimmed746,544$42M0.7%2026-Q2
Bank of New York Mellon Corp trimmed743,474$42M0.7%2026-Q2
WATER ISLAND CAPITAL LLC added737,734$42M0.7%2026-Q2
Grantham, Mayo, Van Otterloo & Co. LLC added688,984$39M0.6%2026-Q2
VANGUARD FIDUCIARY TRUST CO added666,367$38M0.6%2026-Q2
RENAISSANCE TECHNOLOGIES LLC added645,558$37M0.6%2026-Q2
TWO SIGMA INVESTMENTS, LP added609,070$35M0.6%2026-Q2
FIRST TRUST ADVISORS LP trimmed549,405$31M0.5%2026-Q2
Sand Grove Capital Management LLP trimmed506,546$29M0.5%2026-Q2
HBK INVESTMENTS L P trimmed484,938$28M0.5%2026-Q2
ALPINE ASSOCIATES MANAGEMENT INC. trimmed433,368$25M0.4%2026-Q2
Squarepoint Ops LLC added430,937$24M0.4%2026-Q2
Legal & General Group Plc trimmed427,046$24M0.4%2026-Q2
Weiss Asset Management LP added411,513$23M0.4%2026-Q2
SEGALL BRYANT & HAMILL, LLC trimmed395,077$22M0.4%2026-Q2
GABELLI & Co INVESTMENT ADVISERS, INC. added391,636$22M0.4%2026-Q2
Calamos Advisors LLC new380,686$22M0.4%2026-Q2
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND trimmed375,613$21M0.4%2026-Q2
READYSTATE ASSET MANAGEMENT LP trimmed372,964$21M0.4%2026-Q2
CAXTON ASSOCIATES LLP trimmed372,254$21M0.3%2026-Q2
CITADEL ADVISORS LLC added362,001$21M0.3%2026-Q2
BANK OF AMERICA CORP /DE/ added360,040$20M0.3%2026-Q2
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added352,411$20M0.3%2026-Q2
Groupe la Francaise added341,953$14M0.2%2026-Q2
RHUMBLINE ADVISERS added336,267$19M0.3%2026-Q2
River Road Asset Management, LLC trimmed316,352$18M0.3%2026-Q2
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added315,011$18M0.3%2026-Q2
Capula Management Ltd added307,584$17M0.3%2026-Q2
PICTON MAHONEY ASSET MANAGEMENT added300,000$17M0.3%2026-Q2
Man Group plc added299,090$17M0.3%2026-Q2
WELLS FARGO & COMPANY/MN added297,087$17M0.3%2026-Q2
KENNEDY CAPITAL MANAGEMENT LLC trimmed286,261$16M0.3%2026-Q2
Woodline Partners LP trimmed280,760$16M0.3%2026-Q2
PSquared Asset Management AG new274,400$15M0.3%2026-Q2
Nuveen, LLC added272,933$15M0.3%2026-Q2
Trexquant Investment LP new270,666$15M0.3%2026-Q2
JPMORGAN CHASE & CO trimmed265,004$15M0.3%2026-Q2
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed263,295$15M0.2%2026-Q2
TUDOR INVESTMENT CORP ET AL added234,603$13M0.2%2026-Q2
PRINCIPAL FINANCIAL GROUP INC added227,345$13M0.2%2026-Q2
Nearwater Capital Markets, Ltd new223,100$13M0.2%2026-Q2
FRANKLIN RESOURCES INC trimmed219,290$12M0.2%2026-Q2
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed214,209$12M0.2%2026-Q2
STATE OF WISCONSIN INVESTMENT BOARD added213,525$12M0.2%2026-Q2
Polar Asset Management Partners Inc. added212,868$12M0.2%2026-Q2
Birnam Oak Advisors, LP added198,018$11M0.2%2026-Q2
Swiss National Bank added196,700$11M0.2%2026-Q2
Public Sector Pension Investment Board added178,000$10M0.2%2026-Q2
California Public Employees Retirement System added173,148$10M0.2%2026-Q2
CITIGROUP INC trimmed161,356$9M0.2%2026-Q2
CREDIT INDUSTRIEL ET COMMERCIAL added160,279$9M0.2%2026-Q2
PRELUDE CAPITAL MANAGEMENT, LLC trimmed149,080$8M0.1%2026-Q2
NINE MASTS CAPITAL Ltd added138,521$8M0.1%2026-Q2
ProShare Advisors LLC added134,247$8M0.1%2026-Q2
AMERIPRISE FINANCIAL INC trimmed127,385$7M0.1%2026-Q2
PRICE T ROWE ASSOCIATES INC /MD/ added123,541$7M0.1%2026-Q2
Magellan Asset Management Ltd added116,027$7M0.1%2026-Q2
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed114,211$6M0.1%2026-Q2
FMR LLC trimmed113,718$6M0.1%2026-Q2
TORONTO DOMINION BANK trimmed112,495$6M0.1%2026-Q2
Lighthouse Investment Partners, LLC added112,164$6M0.1%2026-Q2
DEUTSCHE BANK AG\ trimmed112,141$6M0.1%2026-Q2
MetLife Investment Management, LLC added106,960$6M0.1%2026-Q2
Retirement Systems of Alabama trimmed103,053$6M0.1%2026-Q2
STANSBERRY ASSET MANAGEMENT, LLC trimmed102,623$6M0.1%2026-Q2
OCCUDO QUANTITATIVE STRATEGIES LP trimmed101,419$6M0.1%2026-Q2
Phocas Financial Corp. trimmed97,364$6M0.1%2026-Q2
BOOTHBAY FUND MANAGEMENT, LLC added92,727$5M0.1%2026-Q2

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership