Who owns MSC Industrial Direct Co. (MSM)
Which tracked institutional funds hold MSM, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MSM 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
The tracked-fund tape on MSM is one-sided between 2026-Q1 and 2026-Q2: 183 added or opened and 59 trimmed or exited — on balance accumulating.
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
MSM’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 MSM more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MSM 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 446 tracked filers holding MSM, 252 increased or opened the position and 203 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 MSM 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 37
- Alyeska Investment Group, L.P.$50M
- Jupiter Topco LLC$29M
- Interval Partners, LP$29M
- Bahl & Gaynor LLC$29M
- SILVERCREST ASSET MANAGEMENT GROUP LLC$19M
- 1832 Asset Management L.P.$14M
Full exits 32
- MACKENZIE FINANCIAL CORP$52M
- OLD REPUBLIC INTERNATIONAL CORP$38M
- BALYASNY ASSET MANAGEMENT L.P.$31M
- JANUS HENDERSON GROUP PLC$17M
- DekaBank Deutsche Girozentrale$14M
- Veritas Asset Management LLP$7M
Largest adds
- BlackRock, Inc.$348M
- FULLER & THALER ASSET MANAGEMENT, INC.$60M
- VANGUARD PORTFOLIO MANAGEMENT LLC$58M
- VANGUARD CAPITAL MANAGEMENT LLC$56M
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$54M
- Boston Partners$51M
Largest trims
- Invesco Ltd.$57M
- MILLENNIUM MANAGEMENT LLC$38M
- AMERICAN CENTURY COMPANIES INC$34M
- BRANDES INVESTMENT PARTNERS, LP$22M
- Point72 Asset Management, L.P.$22M
- Squarepoint Ops LLC$10M
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 | 5,560,498 | $661M | 12.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 2,139,176 | $254M | 5.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,026,407 | $241M | 4.7% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,887,419 | $225M | 4.4% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,743,956 | $207M | 4.1% | 2026-Q2 |
| Boston Partners added | 1,714,389 | $204M | 4.0% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 1,676,859 | $199M | 3.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,530,616 | $182M | 3.6% | 2026-Q2 |
| STATE STREET CORP added | 1,463,620 | $174M | 3.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,248,087 | $148M | 2.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,168,449 | $139M | 2.7% | 2026-Q2 |
| Epoch Investment Partners, Inc. trimmed | 926,830 | $110M | 2.2% | 2026-Q2 |
| MORGAN STANLEY added | 783,623 | $93M | 1.8% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 751,553 | $89M | 1.7% | 2026-Q2 |
| Quantinno Capital Management LP added | 653,578 | $78M | 1.5% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 619,507 | $74M | 1.4% | 2026-Q2 |
| Alberta Investment Management Corp trimmed | 570,000 | $68M | 1.3% | 2026-Q2 |
| DEPRINCE RACE & ZOLLO INC trimmed | 540,509 | $64M | 1.3% | 2026-Q2 |
| NEW SOUTH CAPITAL MANAGEMENT INC trimmed | 539,026 | $64M | 1.3% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 470,840 | $56M | 1.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 457,743 | $54M | 1.0% | 2026-Q2 |
| Allianz Asset Management GmbH trimmed | 444,741 | $53M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 435,234 | $52M | 1.0% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 419,828 | $50M | 1.0% | 2026-Q2 |
| Boston Trust Walden Corp trimmed | 415,440 | $49M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 402,667 | $48M | 0.9% | 2026-Q2 |
| NORGES BANK trimmed | 398,005 | $47M | 0.9% | 2026-Q2 |
| FMR LLC trimmed | 392,387 | $47M | 0.9% | 2026-Q2 |
| Invesco Ltd. trimmed | 375,210 | $45M | 0.9% | 2026-Q2 |
| CRAWFORD INVESTMENT COUNSEL INC trimmed | 374,896 | $45M | 0.9% | 2026-Q2 |
| PZENA INVESTMENT MANAGEMENT LLC trimmed | 373,664 | $44M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 366,572 | $44M | 0.9% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 356,897 | $42M | 0.8% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 352,999 | $33M | 0.6% | 2026-Q2 |
| FIL Ltd added | 352,087 | $42M | 0.8% | 2026-Q2 |
| SG Capital Management LLC added | 343,793 | $41M | 0.8% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 331,101 | $39M | 0.8% | 2026-Q2 |
| Freestone Grove Partners LP added | 321,239 | $38M | 0.7% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 292,848 | $35M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 288,483 | $34M | 0.7% | 2026-Q2 |
| Bragg Financial Advisors, Inc trimmed | 281,492 | $33M | 0.7% | 2026-Q2 |
| Gotham Asset Management, LLC added | 278,004 | $33M | 0.6% | 2026-Q2 |
| Medina Value Partners, LLC trimmed | 258,570 | $31M | 0.6% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 257,328 | $30M | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 248,481 | $30M | 0.6% | 2026-Q2 |
| Jupiter Topco LLC new | 247,342 | $29M | 0.6% | 2026-Q2 |
| Interval Partners, LP added | 244,604 | $29M | 0.6% | 2026-Q2 |
| Bahl & Gaynor LLC new | 241,748 | $29M | 0.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 236,504 | $28M | 0.5% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 229,504 | $27M | 0.5% | 2026-Q2 |
| UBS Group AG trimmed | 228,179 | $27M | 0.5% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 210,343 | $25M | 0.5% | 2026-Q2 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. trimmed | 209,296 | $25M | 0.5% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 194,122 | $23M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 166,064 | $20M | 0.4% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC new | 162,241 | $19M | 0.4% | 2026-Q2 |
| WINTON GROUP Ltd added | 161,582 | $19M | 0.4% | 2026-Q2 |
| LONE PEAK GLOBAL INVESTORS LLC trimmed | 161,417 | $19M | 0.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 160,747 | $19M | 0.4% | 2026-Q2 |
| ARGENT CAPITAL MANAGEMENT LLC trimmed | 140,596 | $17M | 0.3% | 2026-Q2 |
| SCOPUS ASSET MANAGEMENT, L.P. added | 140,477 | $17M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 134,145 | $16M | 0.3% | 2026-Q2 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC trimmed | 128,175 | $15M | 0.3% | 2026-Q2 |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC added | 120,000 | $14M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 118,538 | $14M | 0.3% | 2026-Q2 |
| TECTONIC ADVISORS LLC added | 117,272 | $14M | 0.3% | 2026-Q2 |
| 1832 Asset Management L.P. new | 113,933 | $14M | 0.3% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP trimmed | 105,896 | $13M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 103,977 | $12M | 0.2% | 2026-Q2 |
| HANCOCK WHITNEY CORP trimmed | 103,001 | $12M | 0.2% | 2026-Q2 |
| TD Asset Management Inc trimmed | 99,119 | $12M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 96,908 | $12M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 95,742 | $11M | 0.2% | 2026-Q2 |
| Creative Planning added | 89,894 | $11M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 89,700 | $11M | 0.2% | 2026-Q2 |
| Hudson Bay Capital Management LP trimmed | 86,265 | $10M | 0.2% | 2026-Q2 |
| Quadrature Capital Ltd new | 85,257 | $10M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 83,464 | $10M | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 82,126 | $10M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 78,485 | $9M | 0.2% | 2026-Q2 |
| ICON ADVISERS INC/CO added | 78,380 | $9M | 0.2% | 2026-Q2 |
| Ceredex Value Advisors LLC trimmed | 77,750 | $9M | 0.2% | 2026-Q2 |
| BW Gestao de Investimentos Ltda. new | 77,102 | $9M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 76,130 | $9M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 68,717 | $8M | 0.2% | 2026-Q2 |
| NewSquare Capital LLC added | 66,672 | $8M | 0.2% | 2026-Q2 |
| Jain Global LLC added | 66,544 | $8M | 0.2% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 63,750 | $8M | 0.1% | 2026-Q2 |
| Altrius Capital Management Inc added | 62,228 | $7M | 0.1% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 60,386 | $7M | 0.1% | 2026-Q2 |
| BUTENSKY & COHEN FINANCIAL SECURITY, INC trimmed | 58,513 | $7M | 0.1% | 2026-Q2 |
| CASTLEARK MANAGEMENT LLC new | 58,250 | $7M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 57,721 | $7M | 0.1% | 2026-Q2 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC added | 54,391 | $6M | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 52,900 | $6M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 51,550 | $6M | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 51,311 | $6M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 50,915 | $6M | 0.1% | 2026-Q2 |
| GHP Investment Advisors, Inc. added | 49,160 | $6M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 47,354 | $6M | 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.