BOSTON BEER COMPANY INC-A (SAM) Top Institutional Shareholders
BOSTON BEER COMPANY INC-A (SAM) 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 $1.74B in SAM holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of SAM tracked by InsiderSet, reporting ownership valued at approximately $177.47M 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 $132.41M, representing an estimated loss of -25.39% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed SAM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Aqr Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in BOSTON BEER COMPANY INC-A (SAM).
This page ranks the largest institutional SAM 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
365
Total Reported Value
$1.74B
Largest Holder
Blackrock, Inc.
Largest Position
$177.47M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
83
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 770,250 | $177,465,697 | $132,413,678 | -$45,052,020 | -25.39% | |
| Aqr Capital Management Llc | 0.07% | 651,984 | $150,217,113 | $112,082,569 | -$38,134,544 | -25.39% | |
| Vanguard Portfolio Management Llc | 0.01% | 634,469 | $146,181,658 | $109,071,566 | -$37,110,092 | -25.39% | |
| Vanguard Capital Management Llc | 0.00% | 340,903 | $78,544,051 | $58,604,635 | -$19,939,416 | -25.39% | |
| American Century Companies Inc | 0.03% | 288,084 | $66,374,554 | $49,524,520 | -$16,850,034 | -25.39% | |
| Dimensional Fund Advisors Lp | 0.01% | 273,612 | $63,040,205 | $47,036,639 | -$16,003,566 | -25.39% | |
| State Street Corp | 0.00% | 255,195 | $58,796,928 | $43,870,572 | -$14,926,356 | -25.39% | |
| Arrowstreet Capital, Limited Partnership | 0.03% | 245,249 | $56,505,370 | $42,160,756 | -$14,344,614 | -25.39% | |
| Quantinno Capital Management Lp | 0.09% | 230,587 | $53,127,245 | $39,640,211 | -$13,487,034 | -25.39% | |
| Ubs Group Ag | 0.01% | 218,604 | $50,366,362 | $37,580,214 | -$12,786,148 | -25.39% | |
| Fmr Llc | 0.00% | 195,365 | $45,012,205 | $33,585,197 | -$11,427,008 | -25.39% | |
| Gotham Asset Management, Llc | 0.12% | 170,318 | $39,241,267 | $29,279,367 | -$9,961,900 | -25.39% | |
| Global Alpha Capital Management Ltd. | 2.04% | 147,525 | $33,989,760 | $25,361,023 | -$8,628,737 | -25.39% | |
| Goldman Sachs Group Inc | 0.00% | 144,960 | $33,398,837 | $24,920,074 | -$8,478,763 | -25.39% | |
| Geode Capital Management, Llc | 0.00% | 142,113 | $32,751,249 | $24,430,646 | -$8,320,603 | -25.41% | |
| Morgan Stanley | 0.00% | 134,511 | $30,991,520 | $23,123,786 | -$7,867,734 | -25.39% | |
| Longleaf Partners | Mason Hawkins | 1.34% | 118,401 | $27,279,590 | $20,354,316 | -$6,925,274 | -25.39% |
| Invesco Ltd. | 0.00% | 115,612 | $26,637,004 | $19,874,859 | -$6,762,145 | -25.39% | |
| Qube Research & Technologies Ltd | 0.04% | 111,324 | $25,649,050 | $19,137,709 | -$6,511,341 | -25.39% | |
| Charles Schwab Investment Management Inc | 0.00% | 106,981 | $24,648,422 | $18,391,104 | -$6,257,318 | -25.39% | |
| Millennium Management Llc | 0.02% | 96,615 | $22,260,096 | $16,609,085 | -$5,651,011 | -25.39% | |
| Renaissance Technologies LLC | Jim Simons | 0.03% | 93,779 | $21,606,682 | $16,121,548 | -$5,485,134 | -25.39% |
| Ameriprise Financial Inc | 0.00% | 91,529 | $21,088,282 | $15,734,750 | -$5,353,532 | -25.39% | |
| Woodson Capital Management, Lp | 3.35% | 90,000 | $20,736,000 | $15,471,900 | -$5,264,100 | -25.39% | |
| Northern Trust Corp | 0.00% | 78,992 | $18,199,757 | $13,579,515 | -$4,620,242 | -25.39% | |
| Man Group Plc | 0.04% | 77,523 | $17,861,299 | $13,326,979 | -$4,534,320 | -25.39% | |
| Southernsun Asset Management, Llc | 2.50% | 74,816 | $17,237,606 | $12,861,619 | -$4,375,987 | -25.39% | |
| Calamos Advisors Llc | 0.06% | 66,749 | $15,378,970 | $11,474,821 | -$3,904,149 | -25.39% | |
| Loomis Sayles & Co L P | 0.02% | 63,481 | $14,626,023 | $10,913,019 | -$3,713,004 | -25.39% | |
| Bank Of New York Mellon Corp | 0.00% | 56,995 | $13,131,690 | $9,798,010 | -$3,333,680 | -25.39% | |
| Franklin Resources Inc | 0.00% | 55,647 | $12,821,068 | $9,566,276 | -$3,254,792 | -25.39% | |
| Citadel Advisors Llc | 0.01% | 53,214 | $12,260,505 | $9,148,019 | -$3,112,486 | -25.39% | |
| First Trust Advisors Lp | 0.01% | 51,675 | $11,905,920 | $8,883,449 | -$3,022,471 | -25.39% | |
| Vanguard Fiduciary Trust Co | 0.00% | 47,670 | $10,983,168 | $8,194,950 | -$2,788,218 | -25.39% | |
| D. E. Shaw & Co., Inc. | 0.01% | 46,607 | $10,738,252 | $8,012,209 | -$2,726,043 | -25.39% | |
| Marshall Wace, Llp | 0.01% | 45,645 | $10,516,608 | $7,846,832 | -$2,669,776 | -25.39% | |
| Corient Private Wealth Llc | 0.01% | 45,427 | $10,444,288 | $7,809,356 | -$2,634,932 | -25.23% | |
| Prescott General Partners Llc | 0.76% | 45,000 | $10,368,000 | $7,735,950 | -$2,632,050 | -25.39% | |
| Bank Of America Corp | 0.00% | 44,352 | $10,218,701 | $7,624,552 | -$2,594,149 | -25.39% | |
| Crawford Fund Management, Llc | 2.96% | 39,381 | $9,073,382 | $6,769,988 | -$2,303,394 | -25.39% | |
| Ieq Capital, Llc | 0.04% | 36,928 | $8,508,203 | $6,348,292 | -$2,159,911 | -25.39% | |
| Winton Group Ltd | 0.26% | 32,659 | $7,524,634 | $5,614,409 | -$1,910,225 | -25.39% | |
| Trexquant Investment Lp | 0.05% | 29,788 | $6,863,155 | $5,120,855 | -$1,742,300 | -25.39% | |
| Gamco Investors, Inc. Et Al | 0.06% | 28,060 | $6,465,024 | $4,823,795 | -$1,641,229 | -25.39% | |
| Nomura Holdings Inc | 0.05% | 27,193 | $6,265,267 | $4,674,749 | -$1,590,518 | -25.39% | |
| Creative Planning | 0.00% | 26,457 | $6,095,748 | $4,548,223 | -$1,547,525 | -25.39% | |
| Gabelli Funds Llc | 0.04% | 26,400 | $6,082,560 | $4,538,424 | -$1,544,136 | -25.39% | |
| Susquehanna International Group, Llp | 0.01% | 26,103 | $6,014,131 | $4,487,367 | -$1,526,764 | -25.39% | |
| Rhumbline Advisers | 0.00% | 23,257 | $5,358,384 | $3,998,111 | -$1,360,273 | -25.39% | |
| Royal Bank Of Canada | 0.00% | 19,081 | $4,395,000 | $3,280,215 | -$1,114,785 | -25.36% |
Frequently asked questions about SAM
Who owns the most SAM stock?
The largest holders of SAM 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 BOSTON BEER COMPANY INC-A (SAM).
Is SAM widely held by superinvestors?
Many widely followed stocks like SAM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly SAM 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.