STX Seagate Technology plc

NASDAQ
$783.00

Seagate Technology plc (STX) Institutional Ownership

What the institutions did with STX 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
20
filed both this quarter and last
Managers holding
19
+0 on the quarter
Buyers
7
1 opened new
Sellers
8
1 sold out entirely
Buyer share
46.7%
of managers who traded it
Breadth
-6.7
net buyers, as a share of those trading

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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
CACTI ASSET MANAGEMENT LLC 271.6K 76.2%
EASTERN BANK 73.8K 20.7%
Central Pacific Bank - Trust Division 2.4K 0.7%
CX Institutional 2.1K 0.6%
Montecito Bank & Trust 1.3K 0.4%
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC 1.3K 0.4%
Silverleafe Capital Partners, LLC 889 0.2%
MassMutual Private Wealth & Trust, FSB 867 0.2%
Versant Capital Management, Inc 553 0.2%
ROCKLAND TRUST CO 450 0.1%
PARK NATIONAL CORP /OH/ 339 0.1%
BAKER TILLY WEALTH MANAGEMENT, LLC 319 0.1%
Adelphi Trust Co 224 0.1%
GoalVest Advisory LLC 206 0.1%
Rosenberg Matthew Hamilton 145 0.0%
Olistico Wealth, LLC 25 0.0%
TOMPKINS FINANCIAL CORP 18 0.0%
Planning Strategies Inc. 17 0.0%
Noble Wealth Management PBC 1 0.0%

Largest changes

Manager Action Previous Current Change
CACTI ASSET MANAGEMENT LLC Reduced 327.9K 271.6K -56.3K
EASTERN BANK Increased 69.9K 73.8K +3.9K
Central Pacific Bank - Trust Division Increased 1.1K 2.4K +1.3K
Silverleafe Capital Partners, LLC New 0 889 +889
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC Increased 849 1.3K +472
PRIVATE CLIENT SERVICES, LLC Sold Out 211 0 -211
Montecito Bank & Trust Reduced 1.5K 1.3K -161
Adelphi Trust Co Reduced 357 224 -133
Versant Capital Management, Inc Reduced 643 553 -90
MassMutual Private Wealth & Trust, FSB Reduced 944 867 -77
PARK NATIONAL CORP /OH/ Reduced 400 339 -61
Rosenberg Matthew Hamilton Increased 107 145 +38
BAKER TILLY WEALTH MANAGEMENT, LLC Increased 305 319 +14
CX Institutional Reduced 2.1K 2.1K -5
Planning Strategies Inc. Increased 16 17 +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.