ARMATA PHARMACEUTICALS INC (ARMP) Institutional Ownership Changes & 13F Activity

ARMATA PHARMACEUTICALS INC (ARMP). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Madison Asset Management, Llc, Vanguard Capital Management Llc, Millennium Management Llc, Dauntless Investment Group, Llc, and Sei Investments Co.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Bank Of America CorpBuy+8,198+233.2%11,714$119.95KQ1 2026May 18, 2026
Millennium Management LlcBuy+231,904+888.9%257,992$2.64MQ1 2026May 15, 2026
Susquehanna International Group, LlpBuy+40,399+165.8%64,759$663.13KQ1 2026May 15, 2026
Goldman Sachs Group IncBuy+15,790+35.0%60,953$624.16KQ1 2026May 15, 2026
Geode Capital Management, LlcBuy+4,667+4.2%114,555$1.17MQ1 2026May 15, 2026
Qube Research & Technologies LtdBuy+3,272+14.0%26,628$272.67KQ1 2026May 15, 2026
683 Capital Management, LlcSell-2,860-2.0%137,000$1.40MQ1 2026May 15, 2026
Tower Research Capital Llc (Trc)Sell-1,327-82.7%277$2.84KQ1 2026May 15, 2026
Morgan StanleyBuy+1,098+48.4%3,367$34.48KQ1 2026May 15, 2026
Silver Grove Financial Group, Inc.Buy+200—200$2.05KQ1 2026May 15, 2026
Barclays PlcBuy+154—154$1.58KQ1 2026May 15, 2026
Fmr LlcBuy+22—22$225.00Q1 2026May 15, 2026
Dauntless Investment Group, LlcBuy+84,449+1377.4%90,580$927.54KQ1 2026May 14, 2026
Renaissance Technologies LLCSell-30,000-43.8%38,496$394.20KQ1 2026May 14, 2026
Hrt Financial LpBuy+10,595—10,595$108.00KQ1 2026May 14, 2026
Sei Investments CoBuy+74,192—74,192$759.73KQ1 2026May 13, 2026
Informed Momentum Co LlcBuy+60,955—60,955$624.18KQ1 2026May 13, 2026
Hudson Bay Capital Management LpBuy+17,584—17,584$180.06KQ1 2026May 13, 2026
Blackrock, Inc.Sell-7,714-10.6%65,050$666.11KQ1 2026May 13, 2026
Jane Street Group, LlcBuy+10,845+63.2%27,998$286.70KQ1 2026May 12, 2026
Citigroup IncBuy+5,160—5,160$52.84KQ1 2026May 11, 2026
Vanguard Capital Management LlcBuy+366,028—366,028$3.75MQ1 2026May 08, 2026
Vanguard Fiduciary Trust CoBuy+67,864—67,864$694.93KQ1 2026May 08, 2026
Vanguard Global Advisers, LlcBuy+3,964—3,964$40.59KQ1 2026May 08, 2026
Madison Asset Management, LlcBuy+2,107,675—2,107,675$21.58MQ1 2026May 07, 2026
Northwestern Mutual Wealth Management CoBuy+433+313.8%571$5.85KQ1 2026May 07, 2026
Ubs Group AgBuy+3,328+326.0%4,349$44.53KQ1 2026May 05, 2026
Seacrest Wealth Management, LlcBuy+536+1.3%41,524$425.21KQ1 2026Apr 15, 2026
Salem Investment Counselors IncBuy+100—100$1.02KQ1 2026Apr 13, 2026
Citadel Advisors LlcSell-10,786-100.0%0$0.00Q1 2026Feb 17, 2026
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Frequently asked questions about ARMP activity

  • Which institutional owners are buying ARMP?

    Institutional owners buying ARMP include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ARMP activity?

    "Buy" means an investor increased their reported position in ARMP compared to the prior reporting period. This reflects growing exposure to ARMATA PHARMACEUTICALS INC (ARMP) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ARMP increasing?

    Institutional interest in ARMP can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.