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SELF

Global Self Storage, Inc.

Company with tickers: SELF

CIK
1031235
CUSIP
37955N106
Shares Outstanding
11,421,732
13F Activity (30d)
46 filings 44 filers
Holders: 55
Total Value: $16,029,548
Total Shares: 3,136,904

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 55 13F filers · Δ vs Dec 31, 2025
Top Holder
18.7%
Jun 2023 → Mar 2026 · range 16.9% – 21.3%
−1.3 pts
Top 5
57.0%
Jun 2023 → Mar 2026 · range 57.0% – 68.0%
−4.3 pts
Top 10
73.4%
Jun 2023 → Mar 2026 · range 73.4% – 83.9%
−1.4 pts
HHI
829
Jun 2023 → Mar 2026 · range 829 – 1,126
Broadly held −126

Quarterly Activity

vs Dec 31, 2025
New
14
Increased
16
Decreased
12
Sold Out
8
Unchanged
13
Holder count: +6
Institutional value: +7.4%
Shares held: +7.1%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega WELLS FARGO & COMPANY/MN +128,918 130,919
Small Private Capital Management, LLC +91,549 103,549
Mega BlackRock, Inc. +58,957 294,640
Mega UBS Group AG +22,527 22,570
Large Man Group plc +9,083 24,959

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega ROYAL BANK OF CANADA −24,917 473
Large Kestra Advisory Services, LLC −12,249 63,120
Mega LPL Financial LLC −9,945 27,969
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC −9,464 15,720
Small BARD ASSOCIATES INC −5,311 16,655

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 430,003 $2,197,315
Mega VANGUARD FIDUCIARY TRUST CO 60,231 $307,780
Small WealthTrust Axiom LLC 31,000 $158,410
Mid Merit Financial Group, LLC 17,975 $91,852
Mega HSBC HOLDINGS PLC 17,271 $88,254

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 494,288 $2,520,868
Mid EASTERLY INVESTMENT PARTNERS LLC 49,061 $250,211
Small STANSBERRY ASSET MANAGEMENT, LLC 47,388 $241,678
Mega CITADEL ADVISORS LLC 36,522 $186,261
Large COMMONWEALTH EQUITY SERVICES, LLC 23,059 $117,600
Filter: New 14 Increased 16 Reduced 12 Sold out 8 Unchanged 13
Showing 55 of 55
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small WINMILL & CO. INC $2,997,014 18.70% 586,500
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,197,315 13.71% 430,003
Mega BlackRock, Inc. $1,505,609 9.39% 294,640
Small MARATHON CAPITAL MANAGEMENT $1,326,693 8.28% 259,627
Large RENAISSANCE TECHNOLOGIES LLC $1,104,654 6.89% 216,175
Mega GEODE CAPITAL MANAGEMENT, LLC $737,178 4.60% 144,262
Mega WELLS FARGO & COMPANY/MN $668,995 4.17% 130,919
Small Private Capital Management, LLC $529,135 3.30% 103,549
Mega MORGAN STANLEY $373,611 2.33% 73,114
Large Kestra Advisory Services, LLC $322,543 2.01% 63,120
Mega DIMENSIONAL FUND ADVISORS LP $312,367 1.95% 61,129
Mega VANGUARD FIDUCIARY TRUST CO Bank $307,780 1.92% 60,231
Micro Towneley Capital Management, Inc / DE $247,196 1.54% 48,375
Large Cetera Investment Advisers $221,952 1.38% 43,435
Mega RAYMOND JAMES FINANCIAL INC $209,192 1.31% 40,938
Mid PFG Investments, LLC $180,904 1.13% 35,402
Small Crossingbridge Advisors, LLC $180,234 1.12% 35,271
Micro AlphaCentric Advisors LLC $180,234 1.12% 35,271
Small Baker Ellis Asset Management LLC $178,850 1.12% 35,000
Mega STATE STREET CORP $161,373 1.01% 31,580
Small WealthTrust Axiom LLC $158,410 0.99% 31,000
Mega LPL Financial LLC $142,921 0.89% 27,969
Mega GOLDMAN SACHS GROUP INC $135,624 0.85% 26,541
Mega NORTHERN TRUST CORP Bank $129,702 0.81% 25,382
Large Man Group plc $127,540 0.80% 24,959
Mid NewEdge Advisors, LLC $123,151 0.77% 24,100
Small JAMES INVESTMENT RESEARCH, INC. $123,151 0.77% 24,100
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $121,510 0.76% 23,779
Mega UBS Group AG $115,332 0.72% 22,570
Small Ethos Financial Group, LLC $111,449 0.70% 21,810
Mega PRICE T ROWE ASSOCIATES INC /MD/ $102,051 0.64% 19,971
Mid Merit Financial Group, LLC $91,852 0.57% 17,975
Mega HSBC HOLDINGS PLC $88,254 0.55% 17,271
Small BARD ASSOCIATES INC $85,107 0.53% 16,655
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $80,329 0.50% 15,720
Mid RITHOLTZ WEALTH MANAGEMENT $55,734 0.35% 10,907
Mega BARCLAYS PLC $53,803 0.34% 10,529
Mega JPMORGAN CHASE & CO $38,892 0.24% 7,611
Mid SIMPLEX TRADING, LLC $33,817 0.21% 6,618
Small Financial Gravity Asset Management, Inc. $32,831 0.20% 6,425
Large OSAIC HOLDINGS, INC. $29,054 0.18% 5,686
Mega CITIGROUP INC $28,764 0.18% 5,629
Mega Vanguard Global Advisers, LLC $20,715 0.13% 4,054
Mid Advisory Services Network, LLC $19,070 0.12% 3,732
Mega PNC FINANCIAL SERVICES GROUP, INC. $9,709 0.06% 1,900
Large ACADIAN ASSET MANAGEMENT LLC $7,312 0.05% 1,431
Large JONES FINANCIAL COMPANIES LLLP $5,130 0.03% 1,004
Large NISA INVESTMENT ADVISORS, LLC $4,859 0.03% 951
Mid BARTLETT & CO. WEALTH MANAGEMENT LLC $2,580 0.02% 505
Mega ROYAL BANK OF CANADA Bank $2,417 0.02% 473
Mega BNP PARIBAS ARBITRAGE, SA $2,084 0.01% 408
Mega FMR LLC $2,044 0.01% 400
Mid Tower Research Capital LLC (TRC) $1,159 0.01% 227
Small Capital Advisors, Ltd. LLC $362 0.00% 71
Small Kozak & Associates, Inc. $0 0.00% 0

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