ARMATA PHARMACEUTICALS INC (ARMP) Top Institutional Shareholders
ARMATA PHARMACEUTICALS INC (ARMP) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $40.11M in ARMP holdings during the latest filing period.
Madison Asset Management, Llc is currently the largest disclosed institutional shareholder of ARMP tracked by InsiderSet, reporting ownership valued at approximately $21.58M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $14.88M, representing an estimated loss of -31.05% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 86% of the total disclosed ARMP value among the investors covered in this analysis. Major shareholders include Madison Asset Management, Llc, Vanguard Capital Management Llc, Millennium Management Llc, and several other long-term asset managers with concentrated positions in ARMATA PHARMACEUTICALS INC (ARMP).
This page ranks the largest institutional ARMP shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
45
Total Reported Value
$40.11M
Largest Holder
Madison Asset Management, Llc
Largest Position
$21.58M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
48
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Madison Asset Management, Llc | 0.27% | 2,107,675 | $21,582,592 | $14,880,186 | -$6,702,407 | -31.05% | |
| Vanguard Capital Management Llc | 0.00% | 366,028 | $3,748,127 | $2,584,158 | -$1,163,969 | -31.05% | |
| Millennium Management Llc | 0.00% | 257,992 | $2,641,838 | $1,821,424 | -$820,414 | -31.05% | |
| 683 Capital Management, Llc | 0.13% | 137,000 | $1,402,880 | $967,220 | -$435,660 | -31.05% | |
| Geode Capital Management, Llc | 0.00% | 114,555 | $1,173,971 | $808,758 | -$365,213 | -31.11% | |
| Edgewood Management Llc | 0.01% | 100,000 | $1,024,000 | $706,000 | -$318,000 | -31.05% | |
| Dauntless Investment Group, Llc | 2.61% | 90,580 | $927,539 | $639,495 | -$288,044 | -31.05% | |
| Sei Investments Co | 0.00% | 74,192 | $759,726 | $523,796 | -$235,930 | -31.05% | |
| Vanguard Fiduciary Trust Co | 0.00% | 67,864 | $694,927 | $479,120 | -$215,807 | -31.05% | |
| Blackrock, Inc. | 0.00% | 65,050 | $666,111 | $459,253 | -$206,858 | -31.05% | |
| Susquehanna International Group, Llp | 0.00% | 64,759 | $663,132 | $457,199 | -$205,933 | -31.05% | |
| Informed Momentum Co Llc | 0.07% | 60,955 | $624,179 | $430,342 | -$193,837 | -31.05% | |
| Goldman Sachs Group Inc | 0.00% | 60,953 | $624,159 | $430,328 | -$193,831 | -31.05% | |
| State Street Corp | 0.00% | 50,800 | $520,192 | $358,648 | -$161,544 | -31.05% | |
| Bridgeway Capital Management, Llc | 0.01% | 44,682 | $457,544 | $315,455 | -$142,089 | -31.05% | |
| Seacrest Wealth Management, Llc | 0.05% | 41,524 | $425,206 | $293,159 | -$132,047 | -31.05% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 38,496 | $394,199 | $271,782 | -$122,417 | -31.05% |
| Grey Ledge Advisors, Llc | 0.07% | 30,000 | $307,200 | $211,800 | -$95,400 | -31.05% | |
| Jane Street Group, Llc | 0.00% | 27,998 | $286,700 | $197,666 | -$89,034 | -31.05% | |
| Qube Research & Technologies Ltd | 0.00% | 26,628 | $272,671 | $187,994 | -$84,677 | -31.05% | |
| Northern Trust Corp | 0.00% | 24,646 | $252,375 | $174,001 | -$78,374 | -31.05% | |
| Hudson Bay Capital Management Lp | 0.00% | 17,584 | $180,060 | $124,143 | -$55,917 | -31.05% | |
| Captrust Financial Advisors | 0.00% | 13,140 | $134,554 | $92,768 | -$41,786 | -31.05% | |
| Bank Of America Corp | 0.00% | 11,714 | $119,951 | $82,701 | -$37,250 | -31.05% | |
| Citigroup Inc | 0.00% | 5,160 | $52,838 | $36,430 | -$16,408 | -31.05% | |
| Ubs Group Ag | 0.00% | 4,349 | $44,533 | $30,704 | -$13,829 | -31.05% | |
| Vanguard Global Advisers, Llc | 0.00% | 3,964 | $40,591 | $27,986 | -$12,605 | -31.05% | |
| Morgan Stanley | 0.00% | 3,367 | $34,478 | $23,771 | -$10,707 | -31.05% | |
| Cornerstone National Bank & Trust Co | 0.01% | 1,428 | $15,080 | $10,082 | -$4,998 | -33.15% | |
| Measured Wealth Private Client Group, Llc | 0.00% | 1,000 | $10,240 | $7,060 | -$3,180 | -31.05% | |
| Trifecta Capital Advisors, Llc | 0.00% | 714 | $7,312 | $5,041 | -$2,271 | -31.06% | |
| Northwestern Mutual Wealth Management Co | 0.00% | 571 | $5,847 | $4,031 | -$1,816 | -31.05% | |
| Osaic Holdings, Inc. | 0.00% | 357 | $3,656 | $2,520 | -$1,136 | -31.06% | |
| Tower Research Capital Llc (Trc) | 0.00% | 277 | $2,836 | $1,956 | -$880 | -31.04% | |
| Silver Grove Financial Group, Inc. | 0.00% | 200 | $2,048 | $1,412 | -$636 | -31.05% | |
| Barclays Plc | 0.00% | 154 | $1,577 | $1,087 | -$490 | -31.06% | |
| Whittier Trust Co | 0.00% | 100 | $1,055 | $706 | -$349 | -33.08% | |
| Salem Investment Counselors Inc | 0.00% | 100 | $1,024 | $706 | -$318 | -31.05% | |
| Geneos Wealth Management Inc. | 0.00% | 92 | $942 | $650 | -$292 | -31.05% | |
| Mai Capital Management | 0.00% | 71 | $728 | $501 | -$227 | -31.15% | |
| Team Financial Group, Llc | 0.00% | 71 | $727 | $501 | -$226 | -31.05% | |
| Fmr Llc | 0.00% | 22 | $225 | $155 | -$70 | -30.97% | |
| Hrt Financial Lp | 0.00% | 10,595 | $108 | $74,801 | +$74,693 | +69159.91% | |
| Sbi Securities Co., Ltd. | 0.00% | 3 | $31 | $21 | -$10 | -31.68% | |
| Wells Fargo & Company/Mn | 0.00% | 1 | $5 | $7 | +$2 | +41.20% |
Frequently asked questions about ARMP
Who owns the most ARMP stock?
The largest holders of ARMP are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ARMATA PHARMACEUTICALS INC (ARMP).
Is ARMP widely held by superinvestors?
Many widely followed stocks like ARMP appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ARMP is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.