MSC INDUSTRIAL DIRECT CO-A (MSM) Top Institutional Shareholders
MSC INDUSTRIAL DIRECT CO-A (MSM) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $4.19B in MSM holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MSM tracked by InsiderSet, reporting ownership valued at approximately $501.27M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $625.73M, representing an estimated gain of +24.83% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 47% of the total disclosed MSM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., American Century Companies Inc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in MSC INDUSTRIAL DIRECT CO-A (MSM).
This page ranks the largest institutional MSM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
409
Total Reported Value
$4.19B
Largest Holder
Blackrock, Inc.
Largest Position
$501.27M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 5,432,644 | $501,270,065 | $625,731,936 | +$124,461,871 | +24.83% | |
| American Century Companies Inc | 0.12% | 2,612,963 | $241,098,269 | $300,961,078 | +$59,862,809 | +24.83% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,132,857 | $196,798,715 | $245,662,469 | +$48,863,754 | +24.83% | |
| Vanguard Capital Management Llc | 0.00% | 2,001,945 | $184,719,465 | $230,584,025 | +$45,864,560 | +24.83% | |
| Fuller & Thaler Asset Management, Inc. | 0.55% | 1,785,596 | $164,756,922 | $205,664,947 | +$40,908,025 | +24.83% | |
| First Trust Advisors Lp | 0.12% | 1,773,133 | $163,606,885 | $204,229,459 | +$40,622,574 | +24.83% | |
| Boston Partners | 0.16% | 1,660,501 | $153,205,908 | $191,256,505 | +$38,050,597 | +24.84% | |
| State Street Corp | 0.00% | 1,410,760 | $130,170,825 | $162,491,337 | +$32,320,512 | +24.83% | |
| Charles Schwab Investment Management Inc | 0.02% | 1,393,062 | $128,537,831 | $160,452,881 | +$31,915,050 | +24.83% | |
| Dimensional Fund Advisors Lp | 0.03% | 1,357,419 | $125,240,063 | $156,347,520 | +$31,107,457 | +24.84% | |
| Invesco Ltd. | 0.02% | 1,150,782 | $106,182,655 | $132,547,071 | +$26,364,416 | +24.83% | |
| Geode Capital Management, Llc | 0.01% | 1,107,530 | $102,210,233 | $127,565,305 | +$25,355,072 | +24.81% | |
| Epoch Investment Partners, Inc. | 0.55% | 976,631 | $90,113,743 | $112,488,359 | +$22,374,616 | +24.83% | |
| Victory Capital Management Inc | 0.06% | 932,321 | $86,025,258 | $107,384,733 | +$21,359,475 | +24.83% | |
| Millennium Management Llc | 0.05% | 728,602 | $67,228,107 | $83,920,378 | +$16,692,271 | +24.83% | |
| Deprince Race & Zollo Inc | 1.23% | 705,775 | $65,121,859 | $81,291,165 | +$16,169,306 | +24.83% | |
| Morgan Stanley | 0.00% | 616,204 | $56,857,271 | $70,974,377 | +$14,117,106 | +24.83% | |
| Alberta Investment Management Corp | 0.34% | 602,000 | $55,546,540 | $69,338,360 | +$13,791,820 | +24.83% | |
| New South Capital Management Inc | 2.56% | 578,751 | $53,401,355 | $66,660,540 | +$13,259,185 | +24.83% | |
| Mackenzie Financial Corp | 0.06% | 563,100 | $51,957,237 | $64,857,858 | +$12,900,621 | +24.83% | |
| Point72 Asset Management, L.P. | 0.09% | 531,418 | $49,033,939 | $61,208,725 | +$12,174,786 | +24.83% | |
| Bank Of New York Mellon Corp | 0.01% | 487,074 | $44,942,354 | $56,101,183 | +$11,158,829 | +24.83% | |
| Boston Trust Walden Corp | 0.37% | 486,508 | $44,890,093 | $56,035,991 | +$11,145,898 | +24.83% | |
| Allianz Asset Management Gmbh | 0.05% | 471,976 | $43,549,226 | $54,362,196 | +$10,812,970 | +24.83% | |
| Quantinno Capital Management Lp | 0.07% | 461,835 | $42,613,552 | $53,194,155 | +$10,580,603 | +24.83% | |
| Hancock Classic Value | Richard Pzena | 0.13% | 444,610 | $41,024,165 | $51,210,180 | +$10,186,015 | +24.83% |
| Northern Trust Corp | 0.01% | 430,184 | $39,693,078 | $49,548,593 | +$9,855,515 | +24.83% | |
| Fmr Llc | 0.00% | 413,962 | $38,196,282 | $47,680,143 | +$9,483,861 | +24.83% | |
| Citadel Advisors Llc | 0.03% | 398,364 | $36,757,046 | $45,883,566 | +$9,126,520 | +24.83% | |
| Crawford Investment Counsel Inc | 0.62% | 392,999 | $36,261,978 | $45,265,625 | +$9,003,647 | +24.83% | |
| Royce & Associates Lp | 0.35% | 387,325 | $35,738,478 | $44,612,094 | +$8,873,616 | +24.83% | |
| Brandes Investment Partners, Lp | 0.24% | 372,515 | $34,371,959 | $42,906,278 | +$8,534,319 | +24.83% | |
| Ubs Group Ag | 0.01% | 364,319 | $33,615,714 | $41,962,262 | +$8,346,548 | +24.83% | |
| Van Lanschot Kempen Investment Management N.V. | 0.29% | 358,699 | $33,097,157 | $41,314,951 | +$8,217,794 | +24.83% | |
| Balyasny Asset Management L.P. | 0.06% | 335,797 | $30,983,989 | $38,677,098 | +$7,693,109 | +24.83% | |
| Fil Ltd | 0.02% | 326,737 | $30,148,023 | $37,633,568 | +$7,485,545 | +24.83% | |
| Alliancebernstein L.P. | 0.01% | 352,164 | $29,616,992 | $40,562,250 | +$10,945,258 | +36.96% | |
| Bank Of America Corp | 0.00% | 306,695 | $28,298,748 | $35,325,130 | +$7,026,382 | +24.83% | |
| Goldman Sachs Group Inc | 0.00% | 300,042 | $27,684,866 | $34,558,838 | +$6,873,972 | +24.83% | |
| Aqr Capital Management Llc | 0.01% | 300,178 | $27,445,326 | $34,574,502 | +$7,129,176 | +25.98% | |
| Medina Value Partners, Llc | 5.60% | 289,622 | $26,723,422 | $33,358,662 | +$6,635,240 | +24.83% | |
| Vanguard Fiduciary Trust Co | 0.01% | 283,774 | $26,183,827 | $32,685,089 | +$6,501,262 | +24.83% | |
| Bragg Financial Advisors, Inc | 0.82% | 282,261 | $26,044,223 | $32,510,822 | +$6,466,599 | +24.83% | |
| Gotham Asset Management, Llc | 0.07% | 241,967 | $22,326,295 | $27,869,759 | +$5,543,464 | +24.83% | |
| Russell Investments Group, Ltd. | 0.02% | 228,822 | $21,113,492 | $26,355,718 | +$5,242,226 | +24.83% | |
| Wellington Management Group Llp | 0.00% | 209,333 | $19,315,157 | $24,110,975 | +$4,795,818 | +24.83% | |
| Ameriprise Financial Inc | 0.00% | 186,737 | $17,228,994 | $21,508,368 | +$4,279,374 | +24.84% | |
| Janus Henderson Group Plc | 0.01% | 185,635 | $17,128,541 | $21,381,439 | +$4,252,898 | +24.83% | |
| Verition Fund Management Llc | 0.15% | 171,409 | $15,815,908 | $19,742,889 | +$3,926,981 | +24.83% | |
| Lone Peak Global Investors Llc | 2.63% | 171,195 | $15,796,163 | $19,718,240 | +$3,922,077 | +24.83% |
Frequently asked questions about MSM
Who owns the most MSM stock?
The largest holders of MSM are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MSC INDUSTRIAL DIRECT CO-A (MSM).
Is MSM widely held by superinvestors?
Many widely followed stocks like MSM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MSM is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.