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Institutional Ownership · SEC Form 13F

Who owns Monopar Therapeutics Inc. (MNPR)


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

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

81
Institutional holders
6M
Shares held (tracked funds)
92.9%
Of shares outstanding

How the tape is positioned

22 tracked funds added or opened MNPR while 19 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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

MNPR’s largest tracked holder by dollar value, JANUS HENDERSON GROUP PLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in MNPR 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 2025-Q4 and 2026-Q1, across 81 tracked filers holding MNPR, 53 increased or opened the position and 31 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 MNPR between the 2025-Q4 and 2026-Q1 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 8

  • VANGUARD CAPITAL MANAGEMENT LLC$12M
  • Sio Capital Management, LLC$10M
  • Vestal Point Capital, LP$4M
  • Walleye Capital LLC$3M
  • VANGUARD PORTFOLIO MANAGEMENT LLC$3M
  • SILVERARC CAPITAL MANAGEMENT, LLC$2M

Full exits 4

  • VANGUARD GROUP INC$19M
  • Deep Track Capital, LP$6M
  • RENAISSANCE TECHNOLOGIES LLC$746K
  • Virtu Financial LLC$654K

Largest adds

  • DEERFIELD MANAGEMENT COMPANY, L.P.$7M
  • Polar Capital Holdings Plc$6M
  • BALYASNY ASSET MANAGEMENT L.P.$5M
  • CITADEL ADVISORS LLC$3M
  • Alyeska Investment Group, L.P.$3M
  • BANK OF AMERICA CORP /DE/$3M

Largest trims

  • ADAGE CAPITAL PARTNERS GP, L.L.C.$25M
  • JANUS HENDERSON GROUP PLC$14M
  • RA CAPITAL MANAGEMENT, L.P.$7M
  • WELLINGTON MANAGEMENT GROUP LLP$6M
  • Saturn V Capital Management LP$2M
  • MILLENNIUM MANAGEMENT LLC$2M

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
JANUS HENDERSON GROUP PLC1,317,410$72M18.6%2026-Q1
RA CAPITAL MANAGEMENT, L.P.667,207$37M9.4%2026-Q1
Saturn V Capital Management LP added345,626$19M4.9%2026-Q1
DEERFIELD MANAGEMENT COMPANY, L.P. added323,745$18M4.6%2026-Q1
BlackRock, Inc. added316,567$17M4.5%2026-Q1
ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed309,195$17M4.4%2026-Q1
Siren, L.L.C. added270,118$15M3.8%2026-Q1
ADAR1 Capital Management, LLC added264,278$14M3.7%2026-Q1
Polar Capital Holdings Plc added226,526$12M3.2%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new218,463$12M3.1%2026-Q1
Sio Capital Management, LLC new173,506$10M2.5%2026-Q1
WELLINGTON MANAGEMENT GROUP LLP trimmed153,938$8M2.2%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. added136,443$7M1.9%2026-Q1
TCG Crossover Management, LLC trimmed132,103$7M1.9%2026-Q1
Alyeska Investment Group, L.P. added100,000$5M1.4%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added99,918$5M1.4%2026-Q1
Vivo Capital, LLC90,500$5M1.3%2026-Q1
STATE STREET CORP added88,355$5M1.3%2026-Q1
Bank of New York Mellon Corp added78,618$4M1.1%2026-Q1
Vestal Point Capital, LP new65,418$4M0.9%2026-Q1
Walleye Capital LLC new63,119$3M0.9%2026-Q1
BANK OF AMERICA CORP /DE/ added59,699$3M0.8%2026-Q1
CITADEL ADVISORS LLC added58,436$3M0.8%2026-Q1
MILLENNIUM MANAGEMENT LLC trimmed52,951$3M0.7%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added47,702$3M0.7%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new45,987$3M0.7%2026-Q1
SILVERARC CAPITAL MANAGEMENT, LLC new43,488$2M0.6%2026-Q1
NEUBERGER BERMAN GROUP LLC added42,434$2M0.6%2026-Q1
UBS Group AG added39,436$2M0.6%2026-Q1
GOLDMAN SACHS GROUP INC added34,710$2M0.5%2026-Q1
Driehaus Capital Management LLC trimmed33,156$2M0.5%2026-Q1
NORTHERN TRUST CORP added31,862$2M0.5%2026-Q1
DEUTSCHE BANK AG\ added28,822$2M0.4%2026-Q1
VANGUARD FIDUCIARY TRUST CO new28,447$2M0.4%2026-Q1
BARCLAYS PLC added24,935$1M0.4%2026-Q1
Jump Financial, LLC new22,808$1M0.3%2026-Q1
MORGAN STANLEY trimmed22,312$1M0.3%2026-Q1
Squarepoint Ops LLC added21,754$1M0.3%2026-Q1
Russell Investments Group, Ltd. added14,249$781K0.2%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed12,558$688K0.2%2026-Q1
TWO SIGMA INVESTMENTS, LP added9,765$535K0.1%2026-Q1
SEI INVESTMENTS CO added7,582$415K0.1%2026-Q1
WINTON GROUP Ltd new6,829$374K0.1%2026-Q1
AMERIPRISE FINANCIAL INC new6,819$374K0.1%2026-Q1
Informed Momentum Co LLC trimmed6,225$341K0.1%2026-Q1
Creative Planning new5,987$328K0.1%2026-Q1
TD Asset Management Inc added5,884$322K0.1%2026-Q1
GERBER, LLC5,601$307K0.1%2026-Q1
Nuveen, LLC5,551$304K0.1%2026-Q1
RHUMBLINE ADVISERS trimmed4,946$271K0.1%2026-Q1
MANUFACTURERS LIFE INSURANCE COMPANY, THE new4,572$250K0.1%2026-Q1
Engineers Gate Manager LP added4,434$243K0.1%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed4,137$227K0.1%2026-Q1
Quadrature Capital Ltd new3,673$201K0.1%2026-Q1
Virtus Investment Advisers, LLC added3,655$200K0.1%2026-Q1
Your Advocates Ltd., LLP new3,344$183K0.0%2026-Q1
MetLife Investment Management, LLC2,538$139K0.0%2026-Q1
JPMORGAN CHASE & CO added2,422$129K0.0%2026-Q1
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed2,056$113K0.0%2026-Q1
WELLS FARGO & COMPANY/MN trimmed1,728$95K0.0%2026-Q1
DIADEMA PARTNERS LP new1,630$89K0.0%2026-Q1
Vanguard Global Advisers, LLC new1,553$85K0.0%2026-Q1
NEW YORK STATE COMMON RETIREMENT FUND1,200$66K0.0%2026-Q1
BNP PARIBAS FINANCIAL MARKETS trimmed979$54K0.0%2026-Q1
Police & Firemen's Retirement System of New Jersey964$53K0.0%2026-Q1
Persistent Asset Partners Ltd new783$43K0.0%2026-Q1
Tower Research Capital LLC (TRC) added761$42K0.0%2026-Q1
MEEDER ASSET MANAGEMENT INC trimmed637$35K0.0%2026-Q1
FMR LLC added409$22K0.0%2026-Q1
Legal & General Group Plc trimmed408$22K0.0%2026-Q1
Ameritas Investment Partners, Inc.300$16K0.0%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed247$14K0.0%2026-Q1
CITIGROUP INC trimmed232$13K0.0%2026-Q1
Allworth Financial LP added111$6K0.0%2026-Q1
US BANCORP \DE\ new72$4K0.0%2026-Q1
VANGUARD GROUP INC added293,816$19M5.0%2025-Q4 stale
Affinity Asset Advisors, LLC added79,483$6M1.7%2025-Q3 stale
Deep Track Capital, LP new95,408$6M1.6%2025-Q4 stale
Ally Bridge Group (NY) LLC added64,455$5M1.4%2025-Q3 stale
Point72 Asset Management, L.P. trimmed104,019$4M1.0%2025-Q2 stale
MARSHALL WACE, LLP trimmed25,988$946K0.2%2025-Q1 stale
RENAISSANCE TECHNOLOGIES LLC trimmed11,431$746K0.2%2025-Q4 stale
Virtu Financial LLC trimmed10,009$654K0.2%2025-Q4 stale
MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC new6,100$398K0.1%2025-Q4 stale
JANE STREET GROUP, LLC new10,357$377K0.1%2025-Q1 stale
STATE OF WISCONSIN INVESTMENT BOARD new5,757$376K0.1%2025-Q4 stale
OMERS ADMINISTRATION Corp new9,000$328K0.1%2025-Q1 stale
HRT FINANCIAL LP trimmed8,228$299K0.1%2025-Q1 stale
BankChampaign, National Association new4,510$295K0.1%2025-Q4 stale
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM new3,508$286K0.1%2025-Q3 stale
Trexquant Investment LP new3,778$247K0.1%2025-Q4 stale
Invesco Ltd. new3,355$219K0.1%2025-Q4 stale
Ikarian Capital, LLC5,908$215K0.1%2025-Q1 stale
AlphaQuest LLC added1,983$129K0.0%2025-Q4 stale
CANADA PENSION PLAN INVESTMENT BOARD new1,400$91K0.0%2025-Q4 stale
Point72 Asia (Singapore) Pte. Ltd. new1,761$64K0.0%2025-Q1 stale
NewEdge Advisors, LLC600$39K0.0%2025-Q4 stale
RAYMOND JAMES FINANCIAL INC new431$15K0.0%2025-Q2 stale
AMALGAMATED BANK added144$9K0.0%2025-Q4 stale
Point72 (DIFC) Ltd new196$7K0.0%2025-Q1 stale

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