ALPHATEC HOLDINGS INC (ATEC) Top Institutional Shareholders
ALPHATEC HOLDINGS INC (ATEC) 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 $1.22B in ATEC holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ATEC tracked by InsiderSet, reporting ownership valued at approximately $109.76M 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 $83.13M, representing an estimated loss of -24.26% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 39% of the total disclosed ATEC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., American Century Companies Inc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ALPHATEC HOLDINGS INC (ATEC).
This page ranks the largest institutional ATEC 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
280
Total Reported Value
$1.22B
Largest Holder
Blackrock, Inc.
Largest Position
$109.76M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
115
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% | 10,088,182 | $109,759,421 | $83,126,620 | -$26,632,801 | -24.26% | |
| American Century Companies Inc | 0.04% | 6,424,777 | $69,901,591 | $52,940,162 | -$16,961,429 | -24.26% | |
| Vanguard Capital Management Llc | 0.00% | 4,913,779 | $53,461,916 | $40,489,539 | -$12,972,377 | -24.26% | |
| Royal Bank Of Canada | 0.01% | 4,516,592 | $49,141,000 | $37,216,718 | -$11,924,282 | -24.27% | |
| Bnp Paribas Asset Management Holding S.A. | 0.05% | 3,616,330 | $39,345,670 | $29,798,559 | -$9,547,111 | -24.26% | |
| State Street Corp | 0.00% | 3,031,164 | $32,979,064 | $24,976,791 | -$8,002,273 | -24.26% | |
| Geode Capital Management, Llc | 0.00% | 2,906,422 | $31,627,941 | $23,948,917 | -$7,679,024 | -24.28% | |
| Nuveen, Llc | 0.01% | 2,849,413 | $31,001,614 | $23,479,163 | -$7,522,451 | -24.26% | |
| Millennium Management Llc | 0.02% | 2,809,545 | $30,567,850 | $23,150,651 | -$7,417,199 | -24.26% | |
| Bank Of America Corp | 0.00% | 2,560,971 | $27,863,365 | $21,102,401 | -$6,760,964 | -24.26% | |
| Point72 Asset Management, L.P. | 0.05% | 2,493,575 | $27,130,096 | $20,547,058 | -$6,583,038 | -24.26% | |
| Next Century Growth Investors Llc | 1.87% | 2,370,377 | $25,789,701 | $19,531,906 | -$6,257,795 | -24.26% | |
| Hood River Capital Management Llc | 0.25% | 2,300,899 | $25,033,781 | $18,959,408 | -$6,074,373 | -24.26% | |
| Tremblant Capital Group | 0.77% | 2,192,084 | $23,849,874 | $18,062,772 | -$5,787,102 | -24.26% | |
| Braidwell Lp | 0.79% | 2,172,725 | $23,639,248 | $17,903,254 | -$5,735,994 | -24.26% | |
| Two Sigma Investments, Lp | 0.02% | 2,042,843 | $22,226,132 | $16,833,026 | -$5,393,106 | -24.26% | |
| Ubs Group Ag | 0.00% | 1,944,685 | $21,158,172 | $16,024,204 | -$5,133,968 | -24.26% | |
| Oberweis Asset Management Inc/ | 0.61% | 1,908,293 | $20,762,228 | $15,724,334 | -$5,037,894 | -24.26% | |
| Cerity Partners Llc | 0.03% | 1,821,111 | $19,813,685 | $15,005,955 | -$4,807,730 | -24.26% | |
| Emerald Advisers, Llc | 0.62% | 1,807,307 | $19,663,500 | $14,892,210 | -$4,771,290 | -24.26% | |
| Goldman Sachs Group Inc | 0.00% | 1,744,217 | $18,977,081 | $14,372,348 | -$4,604,733 | -24.26% | |
| Morgan Stanley | 0.00% | 1,651,562 | $17,969,007 | $13,608,871 | -$4,360,136 | -24.26% | |
| Penn Capital Management Company, Llc | 1.18% | 1,396,942 | $15,231,633 | $11,510,802 | -$3,720,831 | -24.43% | |
| Aqr Capital Management Llc | 0.01% | 1,385,623 | $15,075,577 | $11,417,534 | -$3,658,043 | -24.26% | |
| Northern Trust Corp | 0.00% | 1,358,741 | $14,783,103 | $11,196,026 | -$3,587,077 | -24.26% | |
| Metlife Investment Management, Llc | 0.07% | 1,327,843 | $14,446,932 | $10,941,426 | -$3,505,506 | -24.26% | |
| Deutsche Bank Ag\ | 0.00% | 1,302,465 | $14,170,819 | $10,732,312 | -$3,438,507 | -24.26% | |
| Aberdeen Group Plc | 0.02% | 1,292,606 | $14,063,554 | $10,651,073 | -$3,412,481 | -24.26% | |
| Nomura Asset Management International Inc. | 0.02% | 1,292,107 | $14,058,000 | $10,646,962 | -$3,411,038 | -24.26% | |
| Granite Investment Partners, Llc | 0.80% | 1,195,156 | $13,003,297 | $9,848,085 | -$3,155,212 | -24.26% | |
| New York State Common Retirement Fund | 0.02% | 1,183,930 | $12,881,158 | $9,755,583 | -$3,125,575 | -24.26% | |
| Emerald Mutual Fund Advisers Trust | 0.61% | 1,156,826 | $12,586,267 | $9,532,246 | -$3,054,021 | -24.26% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,104,753 | $12,019,713 | $9,103,165 | -$2,916,548 | -24.26% | |
| Renaissance Technologies LLC | Jim Simons | 0.02% | 1,055,100 | $11,479,488 | $8,694,024 | -$2,785,464 | -24.26% |
| Raymond James Financial Inc | 0.00% | 1,005,303 | $11,023,597 | $8,283,697 | -$2,739,900 | -24.85% | |
| Charles Schwab Investment Management Inc | 0.00% | 978,068 | $10,641,380 | $8,059,280 | -$2,582,100 | -24.26% | |
| King Luther Capital Management Corp | 0.04% | 944,756 | $10,278,945 | $7,784,789 | -$2,494,156 | -24.26% | |
| Jane Street Group, Llc | 0.01% | 878,549 | $9,558,613 | $7,239,244 | -$2,319,369 | -24.26% | |
| Citadel Advisors Llc | 0.01% | 857,339 | $9,327,849 | $7,064,473 | -$2,263,376 | -24.26% | |
| Motley Fool Asset Management Llc | 0.40% | 855,514 | $9,307,992 | $7,049,435 | -$2,258,557 | -24.26% | |
| Parkman Healthcare Partners Llc | 0.93% | 823,763 | $8,962,541 | $6,787,807 | -$2,174,734 | -24.26% | |
| Vanguard Fiduciary Trust Co | 0.00% | 795,985 | $8,660,317 | $6,558,916 | -$2,101,401 | -24.26% | |
| Qube Research & Technologies Ltd | 0.01% | 795,578 | $8,655,889 | $6,555,563 | -$2,100,326 | -24.26% | |
| Schonfeld Strategic Advisors Llc | 0.07% | 766,383 | $8,338,246 | $6,314,996 | -$2,023,250 | -24.26% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 696,637 | $7,579,411 | $5,740,289 | -$1,839,122 | -24.26% |
| Intrinsic Edge Capital Management Llc | 1.29% | 649,428 | $7,065,777 | $5,351,287 | -$1,714,490 | -24.26% | |
| Squarepoint Ops Llc | 0.01% | 607,118 | $6,605,444 | $5,002,652 | -$1,602,792 | -24.26% | |
| Sei Investments Co | 0.01% | 598,003 | $6,506,271 | $4,927,545 | -$1,578,726 | -24.26% | |
| Motley Fool Wealth Management, Llc | 0.71% | 575,828 | $6,265,004 | $4,744,823 | -$1,520,181 | -24.26% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 507,017 | $5,516,345 | $4,177,820 | -$1,338,525 | -24.26% |
Frequently asked questions about ATEC
Who owns the most ATEC stock?
The largest holders of ATEC 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 ALPHATEC HOLDINGS INC (ATEC).
Is ATEC widely held by superinvestors?
Many widely followed stocks like ATEC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ATEC 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.