ARMATA PHARMACEUTICALS INC (ARMP) 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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $32.28M 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 $13.65M in its June 30, 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 $8.81M, representing an estimated loss of -35.49% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 90% of the total disclosed ARMP value among the investors covered in this analysis. Major shareholders include Madison Asset Management, Llc, Blackrock, Inc., Vanguard Capital 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
52
Total Reported Value
$32.28M
Largest Holder
Madison Asset Management, Llc
Largest Position
$13.65M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
66
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 | 0.16% | 2,107,175 | $13,654,494 | $8,807,992 | -$4,846,503 | -35.49% | |
| Blackrock, Inc. | 0.00% | 559,986 | $3,628,710 | $2,340,741 | -$1,287,969 | -35.49% | |
| Vanguard Capital Management Llc | 0.00% | 487,968 | $3,162,033 | $2,039,706 | -$1,122,327 | -35.49% | |
| Millennium Management Llc | 0.00% | 470,500 | $3,048,840 | $1,966,690 | -$1,082,150 | -35.49% | |
| Geode Capital Management, Llc | 0.00% | 270,550 | $1,753,791 | $1,130,899 | -$622,892 | -35.52% | |
| Dauntless Investment Group, Llc | 2.29% | 203,891 | $1,321,214 | $852,264 | -$468,950 | -35.49% | |
| State Street Corp | 0.00% | 129,600 | $839,808 | $541,728 | -$298,080 | -35.49% | |
| Northern Trust Corp | 0.00% | 89,791 | $581,845 | $375,326 | -$206,519 | -35.49% | |
| Vanguard Portfolio Management Llc | 0.00% | 81,354 | $527,174 | $340,060 | -$187,114 | -35.49% | |
| Edgewood Management Llc | 0.01% | 80,000 | $518,400 | $334,400 | -$184,000 | -35.49% | |
| Vanguard Fiduciary Trust Co | 0.00% | 79,495 | $515,128 | $332,289 | -$182,839 | -35.49% | |
| Grey Ledge Advisors, Llc | 0.07% | 50,000 | $324,000 | $209,000 | -$115,000 | -35.49% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 48,318 | $313,101 | $201,969 | -$111,132 | -35.49% |
| Bridgeway Capital Management, Llc | 0.01% | 44,682 | $289,539 | $186,771 | -$102,768 | -35.49% | |
| Seacrest Wealth Management, Llc | 0.03% | 41,524 | $269,076 | $173,570 | -$95,506 | -35.49% | |
| Bank Of New York Mellon Corp | 0.00% | 29,749 | $192,774 | $124,351 | -$68,423 | -35.49% | |
| Charles Schwab Investment Management Inc | 0.00% | 28,857 | $186,993 | $120,622 | -$66,371 | -35.49% | |
| Hudson Bay Capital Management Lp | 0.00% | 17,584 | $113,944 | $73,501 | -$40,443 | -35.49% | |
| Nuveen, Llc | 0.00% | 15,905 | $103,064 | $66,483 | -$36,581 | -35.49% | |
| New York State Common Retirement Fund | 0.00% | 15,400 | $99,792 | $64,372 | -$35,420 | -35.49% | |
| Ubs Group Ag | 0.00% | 13,697 | $88,757 | $57,253 | -$31,504 | -35.49% | |
| Captrust Financial Advisors | 0.00% | 13,140 | $85,147 | $54,925 | -$30,222 | -35.49% | |
| Deutsche Bank Ag\ | 0.00% | 11,966 | $77,540 | $50,018 | -$27,522 | -35.49% | |
| Bank Of America Corp | 0.00% | 11,305 | $73,256 | $47,255 | -$26,001 | -35.49% | |
| Xtx Topco Ltd | 0.00% | 10,826 | $70,152 | $45,253 | -$24,899 | -35.49% | |
| Wells Fargo & Company/Mn | 0.00% | 10,819 | $70,104 | $45,223 | -$24,881 | -35.49% | |
| Rhumbline Advisers | 0.00% | 8,453 | $54,770 | $35,334 | -$19,436 | -35.49% | |
| Police & Firemen'S Retirement System Of New Jersey | 0.00% | 6,095 | $39,496 | $25,477 | -$14,019 | -35.49% | |
| Citigroup Inc | 0.00% | 5,603 | $36,307 | $23,421 | -$12,886 | -35.49% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 5,461 | $35,387 | $22,827 | -$12,560 | -35.49% | |
| Jpmorgan Chase & Co | 0.00% | 4,916 | $31,757 | $20,549 | -$11,208 | -35.29% | |
| Morgan Stanley | 0.00% | 4,583 | $29,697 | $19,157 | -$10,540 | -35.49% | |
| Vanguard Global Advisers, Llc | 0.00% | 3,964 | $25,687 | $16,570 | -$9,117 | -35.49% | |
| Bnp Paribas Financial Markets | 0.00% | 3,038 | $19,686 | $12,699 | -$6,987 | -35.49% | |
| Barclays Plc | 0.00% | 2,984 | $19,337 | $12,473 | -$6,864 | -35.50% | |
| Strs Ohio | 0.00% | 2,300 | $14,904 | $9,614 | -$5,290 | -35.49% | |
| Tower Research Capital Llc (Trc) | 0.00% | 2,034 | $13,180 | $8,502 | -$4,678 | -35.49% | |
| Cornerstone National Bank & Trust Co | 0.00% | 1,428 | $8,397 | $5,969 | -$2,428 | -28.91% | |
| Legal & General Group Plc | 0.00% | 1,161 | $7,523 | $4,853 | -$2,670 | -35.49% | |
| Ameritas Investment Partners, Inc. | 0.00% | 1,076 | $6,972 | $4,498 | -$2,474 | -35.49% | |
| Measured Wealth Private Client Group, Llc | 0.00% | 1,000 | $6,480 | $4,180 | -$2,300 | -35.49% | |
| Russell Investments Group, Ltd. | 0.00% | 969 | $6,279 | $4,050 | -$2,229 | -35.49% | |
| Simplex Trading, Llc | 0.00% | 794 | $5,145 | $3,319 | -$1,826 | -35.49% | |
| Trifecta Capital Advisors, Llc | 0.00% | 714 | $4,627 | $2,985 | -$1,642 | -35.50% | |
| Royal Bank Of Canada | 0.00% | 497 | $3,000 | $2,077 | -$923 | -30.75% | |
| Fmr Llc | 0.00% | 364 | $2,360 | $1,522 | -$838 | -35.53% | |
| Silver Grove Financial Group, Inc. | 0.00% | 200 | $1,296 | $836 | -$460 | -35.49% | |
| Salem Investment Counselors Inc | 0.00% | 100 | $648 | $418 | -$230 | -35.49% | |
| Geneos Wealth Management Inc. | 0.00% | 92 | $596 | $385 | -$211 | -35.48% | |
| Whittier Trust Co | 0.00% | 100 | $544 | $418 | -$126 | -23.16% |
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.