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Equibles

FSP

Franklin Street Properties Corp /Ma/

Company with tickers: FSP

CIK
1031316
CUSIP
35471R106
Shares Outstanding
103,690,340
13F Activity (30d)
73 filings 68 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 117
Total Value: $43,262,325
Total Shares: 65,549,091
Showing 1–100 of 118 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 117 13F filers · Δ vs Dec 31, 2025
Top Holder
15.3%
Jun 2023 → Mar 2026 · range 12.2% – 27.7%
+0.0 pts
Top 5
53.0%
Jun 2023 → Mar 2026 · range 49.2% – 59.7%
+0.0 pts
Top 10
72.4%
Jun 2023 → Mar 2026 · range 66.2% – 78.4%
−2.2 pts
HHI
711
Jun 2023 → Mar 2026 · range 612 – 1,137
Broadly held−18

Quarterly Activity

vs Dec 31, 2025
New
19
Increased
37
Decreased
27
Sold Out
19
Unchanged
34
Holder count: 0
Institutional value: -31.2%
Shares held: -0.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega UBS Group AG +1,135,892 1,352,082
Mid Cambria Investment Management, L.P. +532,010 875,971
Mega GEODE CAPITAL MANAGEMENT, LLC +418,183 2,260,627
Large LOS ANGELES CAPITAL MANAGEMENT LLC +353,903 501,423
Large RENAISSANCE TECHNOLOGIES LLC +304,177 1,692,603

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid Madison Avenue Partners, LP −1,173,257 1,080,132
Mega D. E. Shaw & Co., Inc. −584,654 227,035
Mega CITADEL ADVISORS LLC −399,300 127,784
Mega MORGAN STANLEY −297,467 1,745,988
Large ACADIAN ASSET MANAGEMENT LLC −238,919 2,209,178

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 3,615,766 $2,386,405
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 533,567 $352,154
Mega VANGUARD FIDUCIARY TRUST CO 522,654 $344,951
Small WITTENBERG INVESTMENT MANAGEMENT, INC. 160,394 $105,860
Mega Vanguard Global Advisers, LLC 53,551 $35,343

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 4,678,234 $4,444,321
Small Peapod Lane Capital LLC 614,235 $583,523
Large TWO SIGMA ADVISERS, LP 222,900 $211,755
Mega JANE STREET GROUP, LLC 194,488 $184,763
Mid ALGERT GLOBAL LLC 128,450 $122,027
Filter: New 19 Increased 37 Reduced 27 Sold out 19 Unchanged 34
Showing 100 of 118
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid PRIVATE MANAGEMENT GROUP INC $6,635,387 15.34% 10,053,618
Small Newtyn Management, LLC $4,719,000 10.91% 7,150,000
Small Converium Capital Inc. $4,361,595 10.08% 6,608,478
Mega BlackRock, Inc. $3,956,223 9.14% 5,994,281
Mega BANK OF AMERICA CORP /DE/ Bank $3,275,822 7.57% 4,963,369
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,386,405 5.52% 3,615,766
Micro GUARDSMAN PRIVATE CAPITAL MANAGEMENT, INC. $1,893,654 4.38% 2,869,173
Mega GEODE CAPITAL MANAGEMENT, LLC $1,492,013 3.45% 2,260,627
Large ACADIAN ASSET MANAGEMENT LLC $1,458,057 3.37% 2,209,178
Mega MORGAN STANLEY $1,152,349 2.66% 1,745,988
Large RENAISSANCE TECHNOLOGIES LLC $1,117,117 2.58% 1,692,603
Mega STATE STREET CORP $1,056,318 2.44% 1,600,483
Mega UBS Group AG $892,373 2.06% 1,352,082
Mid CONFLUENCE INVESTMENT MANAGEMENT LLC $812,892 1.88% 1,231,656
Mid Madison Avenue Partners, LP $712,887 1.65% 1,080,132
Mid RBF Capital, LLC $632,580 1.46% 958,456
Mid Cambria Investment Management, L.P. $578,140 1.34% 875,971
Mega NORTHERN TRUST CORP Bank $413,408 0.96% 626,379
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $394,091 0.91% 597,108
Mega GOLDMAN SACHS GROUP INC $355,911 0.82% 539,260
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $352,154 0.81% 533,567
Mega VANGUARD FIDUCIARY TRUST CO Bank $344,951 0.80% 522,654
Mid GSA CAPITAL PARTNERS LLP $343,827 0.79% 520,950
Large LOS ANGELES CAPITAL MANAGEMENT LLC $330,939 0.76% 501,423
Mega TWO SIGMA INVESTMENTS, LP $282,316 0.65% 427,753
Mega DIMENSIONAL FUND ADVISORS LP $279,383 0.65% 423,310
Mid BI Asset Management Fondsmaeglerselskab A/S $256,589 0.59% 388,772
Mega AQR CAPITAL MANAGEMENT LLC $213,509 0.49% 323,503
Mid PRELUDE CAPITAL MANAGEMENT, LLC $177,380 0.41% 268,759
Mega D. E. Shaw & Co., Inc. $149,842 0.35% 227,035
Mega Bank of New York Mellon Corp Bank $146,260 0.34% 221,609
Mid Summit Trail Advisors, LLC $132,865 0.31% 201,311
Small WITTENBERG INVESTMENT MANAGEMENT, INC. $105,860 0.24% 160,394
Mega FRANKLIN RESOURCES INC $99,204 0.23% 150,310
Mega Nuveen, LLC $88,399 0.20% 133,939
Mid XTX Topco Ltd $84,300 0.19% 127,728
Large Asset Management One Co., Ltd. $81,314 0.19% 123,204
Mid Integrated Wealth Concepts LLC $80,753 0.19% 122,354
Large Qube Research & Technologies Ltd $79,916 0.18% 121,085
Mega DEUTSCHE BANK AG\ Bank $78,493 0.18% 118,929
Mega Invesco Ltd. $74,701 0.17% 113,185
Mega CITADEL ADVISORS LLC $73,975 0.17% 112,084
Large NOMURA ASSET MANAGEMENT CO LTD $62,832 0.15% 95,200
Mega FMR LLC $60,338 0.14% 91,422
Mid Callan Family Office, LLC Family Office $59,621 0.14% 90,336
Mega ALLIANCEBERNSTEIN L.P. $49,427 0.11% 74,890
Mega Mitsubishi UFJ Asset Management Co., Ltd. $43,917 0.10% 66,542
Small BFSG, LLC $43,876 0.10% 66,480
Mega Sumitomo Mitsui Trust Group, Inc. $40,607 0.09% 61,526
Mega RHUMBLINE ADVISERS $40,275 0.09% 61,023
Mega ROYAL BANK OF CANADA Bank $39,248 0.09% 59,469
Mega Vanguard Global Advisers, LLC $35,343 0.08% 53,551
Large Cerity Partners LLC $34,554 0.08% 52,357
Large SEI INVESTMENTS CO $30,911 0.07% 46,835
Mega PRICE T ROWE ASSOCIATES INC /MD/ $30,096 0.07% 45,600
Mega WELLS FARGO & COMPANY/MN $29,447 0.07% 44,618
Mega JPMORGAN CHASE & CO $28,936 0.07% 43,844
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $25,741 0.06% 39,002
Small Abel Hall, LLC $24,959 0.06% 37,818
Large Resona Asset Management Co.,Ltd. $24,429 0.06% 37,014
Small Secure Asset Management, LLC $23,100 0.05% 35,000
Large IEQ CAPITAL, LLC $22,390 0.05% 33,925
Mega RAYMOND JAMES FINANCIAL INC $21,159 0.05% 32,060
Large &PARTNERS $20,067 0.05% 30,405
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $19,839 0.05% 30,060
Large Daiwa Securities Group Inc. Broker-Dealer $18,382 0.04% 27,852
Mid Tower Research Capital LLC (TRC) $17,744 0.04% 26,885
Mid INTECH INVESTMENT MANAGEMENT LLC $15,991 0.04% 24,230
Mid COLDSTREAM CAPITAL MANAGEMENT INC $13,787 0.03% 20,890
Large Police & Firemen's Retirement System of New Jersey Pension $13,534 0.03% 20,507
Small Beartown Capital Management, LLC $13,112 0.03% 19,868
Mega BNP PARIBAS ARBITRAGE, SA $13,065 0.03% 19,796
Mega BARCLAYS PLC $12,173 0.03% 18,446
Large STRS OHIO $12,012 0.03% 18,200
Mid Glenview Trust Co Bank $11,697 0.03% 17,724
Mega CITADEL ADVISORS LLC $10,362 0.02% 15,700
Large Sumitomo Mitsui DS Asset Management Company, Ltd $9,975 0.02% 15,115
Large CWM, LLC $9,895 0.02% 14,993
Large PRUDENTIAL FINANCIAL INC $9,840 0.02% 14,910
Large NISA INVESTMENT ADVISORS, LLC $9,386 0.02% 14,222
Large NISSAY ASSET MANAGEMENT CORP /JAPAN $9,098 0.02% 13,785
Large ProShare Advisors LLC $8,764 0.02% 13,279
Large CIBC Bancorp USA Inc. Bank $7,900 0.02% 11,972
Small Greenspring Advisors, LLC $7,678 0.02% 11,634
Large MERCER GLOBAL ADVISORS INC /ADV $7,110 0.02% 10,774
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $6,804 0.02% 10,310
Large Mariner, LLC $6,799 0.02% 10,303
Mega FIRST TRUST ADVISORS LP $6,691 0.02% 10,138
Small JNBA Financial Advisors $6,613 0.02% 10,021
Mid Ameritas Investment Partners, Inc. $6,306 0.01% 9,556
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $4,884 0.01% 7,400
Mega Legal & General Group Plc $4,608 0.01% 6,982
Large Russell Investments Group, Ltd. $4,151 0.01% 6,290
Mega CITIGROUP INC $2,806 0.01% 4,254
Mid Sterling Capital Management LLC $2,176 0.01% 3,297
Small Essential Partners LLC $1,888 0.00% 2,862
Small OAKWORTH CAPITAL, INC. $1,654 0.00% 2,507
Mid North Star Investment Management Corp. $1,584 0.00% 2,400
Large MetLife Investment Management, LLC $1,490 0.00% 2,258
Large Steward Partners Investment Advisory, LLC $1,188 0.00% 1,800

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