Who owns Selective Insurance Group (SIGI)
Which tracked institutional funds hold SIGI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SIGI company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
143 tracked funds added or opened SIGI while 70 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SIGI’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes SIGI more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in SIGI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 345 tracked filers holding SIGI, 181 increased or opened the position and 197 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SIGI between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 22
- WELLINGTON MANAGEMENT GROUP LLP$77M
- Jupiter Topco LLC$48M
- SCHRODER INVESTMENT MANAGEMENT GROUP$41M
- DEPRINCE RACE & ZOLLO INC$20M
- DEAN INVESTMENT ASSOCIATES, LLC$7M
- Jump Financial, LLC$6M
Full exits 39
- JANUS HENDERSON GROUP PLC$59M
- Qube Research & Technologies Ltd$35M
- ExodusPoint Capital Management, LP$14M
- Gillson Capital LP$12M
- Lighthouse Investment Partners, LLC$12M
- NATIXIS ADVISORS, LLC$7M
Largest adds
- BlackRock, Inc.$250M
- AMERICAN CENTURY COMPANIES INC$121M
- VANGUARD PORTFOLIO MANAGEMENT LLC$78M
- STATE STREET CORP$62M
- VANGUARD CAPITAL MANAGEMENT LLC$59M
- VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.$55M
Largest trims
- FRONTIER CAPITAL MANAGEMENT CO LLC$21M
- Trexquant Investment LP$6M
- Schonfeld Strategic Advisors LLC$6M
- ALGERT GLOBAL LLC$6M
- JANE STREET GROUP, LLC$5M
- PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO$5M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 7,778,138 | $755M | 15.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 3,495,978 | $339M | 6.9% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 3,345,130 | $325M | 6.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,697,663 | $262M | 5.4% | 2026-Q2 |
| STATE STREET CORP added | 2,451,382 | $238M | 4.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 2,228,969 | $216M | 4.4% | 2026-Q2 |
| FMR LLC trimmed | 1,941,671 | $188M | 3.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,825,150 | $177M | 3.6% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 1,610,141 | $156M | 3.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,449,582 | $141M | 2.9% | 2026-Q2 |
| MORGAN STANLEY trimmed | 971,847 | $94M | 1.9% | 2026-Q2 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. added | 931,336 | $90M | 1.8% | 2026-Q2 |
| NORTHERN TRUST CORP added | 916,721 | $89M | 1.8% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 903,173 | $88M | 1.8% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 892,649 | $87M | 1.8% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 795,272 | $77M | 1.6% | 2026-Q2 |
| NORGES BANK added | 764,284 | $74M | 1.5% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 689,202 | $67M | 1.4% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 658,666 | $64M | 1.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 653,775 | $63M | 1.3% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 600,650 | $58M | 1.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 588,462 | $57M | 1.2% | 2026-Q2 |
| Verition Fund Management LLC added | 534,470 | $52M | 1.1% | 2026-Q2 |
| Jupiter Topco LLC new | 490,237 | $48M | 1.0% | 2026-Q2 |
| Bank of New York Mellon Corp added | 489,452 | $47M | 1.0% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 456,285 | $44M | 0.9% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 453,220 | $44M | 0.9% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP new | 419,315 | $41M | 0.8% | 2026-Q2 |
| Boston Trust Walden Corp trimmed | 403,358 | $39M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 397,524 | $39M | 0.8% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 390,214 | $38M | 0.8% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 355,719 | $35M | 0.7% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 353,194 | $35M | 0.7% | 2026-Q2 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP added | 340,986 | $33M | 0.7% | 2026-Q2 |
| Nuveen, LLC added | 336,056 | $33M | 0.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 314,118 | $30M | 0.6% | 2026-Q2 |
| UBS Group AG added | 295,962 | $29M | 0.6% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 292,525 | $28M | 0.6% | 2026-Q2 |
| Invesco Ltd. added | 292,179 | $28M | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 286,594 | $28M | 0.6% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 265,562 | $26M | 0.5% | 2026-Q2 |
| MetLife Investment Management, LLC trimmed | 246,296 | $24M | 0.5% | 2026-Q2 |
| Tributary Capital Management, LLC trimmed | 243,301 | $24M | 0.5% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 209,137 | $20M | 0.4% | 2026-Q2 |
| DEPRINCE RACE & ZOLLO INC new | 204,539 | $20M | 0.4% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 195,793 | $19M | 0.4% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 193,405 | $19M | 0.4% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 189,562 | $18M | 0.4% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 187,467 | $18M | 0.4% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 155,845 | $15M | 0.3% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 155,633 | $15M | 0.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 123,079 | $9M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 120,100 | $12M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 118,384 | $11M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 115,798 | $11M | 0.2% | 2026-Q2 |
| EULAV Asset Management | 110,193 | $11M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 106,451 | $10M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 105,788 | $10M | 0.2% | 2026-Q2 |
| Creative Planning added | 100,183 | $10M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 93,854 | $9M | 0.2% | 2026-Q2 |
| Vest Financial, LLC added | 89,017 | $9M | 0.2% | 2026-Q2 |
| Dana Investment Advisors, Inc. trimmed | 88,108 | $9M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 86,942 | $8M | 0.2% | 2026-Q2 |
| Legal & General Group Plc added | 86,065 | $8M | 0.2% | 2026-Q2 |
| Public Sector Pension Investment Board added | 79,967 | $8M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO added | 79,256 | $8M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 71,294 | $7M | 0.1% | 2026-Q2 |
| DEAN INVESTMENT ASSOCIATES, LLC new | 70,658 | $7M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 68,268 | $7M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 63,170 | $6M | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 62,600 | $6M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 61,922 | $6M | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 59,424 | $6M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 56,653 | $5M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 56,448 | $5M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 55,746 | $5M | 0.1% | 2026-Q2 |
| Voleon Capital Management LP trimmed | 54,198 | $5M | 0.1% | 2026-Q2 |
| Trexquant Investment LP trimmed | 51,888 | $5M | 0.1% | 2026-Q2 |
| Dean Capital Management new | 51,255 | $5M | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 49,853 | $5M | 0.1% | 2026-Q2 |
| Horizon Investments, LLC added | 49,134 | $5M | 0.1% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 46,757 | $5M | 0.1% | 2026-Q2 |
| MARTINGALE ASSET MANAGEMENT L P added | 46,532 | $5M | 0.1% | 2026-Q2 |
| Numerai GP LLC added | 46,452 | $5M | 0.1% | 2026-Q2 |
| Cerity Partners LLC trimmed | 42,809 | $4M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 40,277 | $4M | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 37,600 | $4M | 0.1% | 2026-Q2 |
| Cetera Investment Advisers added | 35,945 | $3M | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 34,390 | $3M | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 34,148 | $3M | 0.1% | 2026-Q2 |
| Holocene Advisors, LP added | 33,943 | $3M | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 33,722 | $3M | 0.1% | 2026-Q2 |
| AGF MANAGEMENT LTD trimmed | 33,386 | $3M | 0.1% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 33,196 | $3M | 0.1% | 2026-Q2 |
| Man Group plc trimmed | 31,086 | $3M | 0.1% | 2026-Q2 |
| Cresset Asset Management, LLC added | 30,999 | $3M | 0.1% | 2026-Q2 |
| Insight Advisors, LLC/ PA | 29,805 | $3M | 0.1% | 2026-Q2 |
| Sterling Capital Management LLC trimmed | 29,038 | $3M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP trimmed | 28,916 | $3M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 28,876 | $3M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.