ARMP Armata Pharmaceuticals, Inc.

AMEX
$3.51

Armata Pharmaceuticals, Inc. (ARMP) Institutional Ownership

What the institutions did with ARMP last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.

Managers compared
23
filed both this quarter and last
Managers holding
21
+5 on the quarter
Buyers
14
7 opened new
Sellers
5
2 sold out entirely
Buyer share
73.7%
of managers who traded it
Breadth
+47.4
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
GEODE CAPITAL MANAGEMENT, LLC 278.5K 56.7%
Grey Ledge Advisors, LLC 100.0K 20.4%
SeaCrest Wealth Management, LLC 41.9K 8.5%
Bank of New York Mellon Corp 30.6K 6.2%
NISA INVESTMENT ADVISORS, LLC 13.7K 2.8%
DEUTSCHE BANK AG\ 11.6K 2.4%
BARCLAYS PLC 5.1K 1.0%
Russell Investments Group, Ltd. 4.5K 0.9%
Cornerstone National Bank & Trust Co 1.4K 0.3%
Trifecta Capital Advisors, LLC 714 0.1%
Farther Finance Advisors, LLC 597 0.1%
CITIGROUP INC 589 0.1%
GAMMA Investing LLC 550 0.1%
Sterling Capital Management LLC 389 0.1%
Caitong International Asset Management Co., Ltd 219 0.0%
Silver Grove Financial Group, Inc. 200 0.0%
SIMPLEX TRADING, LLC 183 0.0%
Team Financial Group, LLC 71 0.0%
EverSource Wealth Advisors, LLC 13 0.0%
SBI Securities Co., Ltd. 3 0.0%
IFP Advisors, Inc 1 0.0%

Largest changes

Manager Action Previous Current Change
Grey Ledge Advisors, LLC Increased 50.0K 100.0K +50.0K
NISA INVESTMENT ADVISORS, LLC New 0 13.7K +13.7K
GEODE CAPITAL MANAGEMENT, LLC Increased 270.6K 278.5K +8.0K
CITIGROUP INC Reduced 5.6K 589 -5.0K
Russell Investments Group, Ltd. Increased 969 4.5K +3.5K
STRS OHIO Sold Out 2.3K 0 -2.3K
BARCLAYS PLC Increased 3.0K 5.1K +2.1K
Bank of New York Mellon Corp Increased 29.7K 30.6K +810
SIMPLEX TRADING, LLC Reduced 794 183 -611
Farther Finance Advisors, LLC New 0 597 +597
GAMMA Investing LLC New 0 550 +550
SeaCrest Wealth Management, LLC Increased 41.5K 41.9K +375
DEUTSCHE BANK AG\ Reduced 12.0K 11.6K -373
Sterling Capital Management LLC Increased 42 389 +347
Caitong International Asset Management Co., Ltd New 0 219 +219
SALEM INVESTMENT COUNSELORS INC Sold Out 100 0 -100
Team Financial Group, LLC New 0 71 +71
EverSource Wealth Advisors, LLC New 0 13 +13
IFP Advisors, Inc New 0 1 +1

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.