ALPHATEC HOLDINGS INC (ATEC) 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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $961.60M 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 $97.98M in its June 30, 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 $115.31M, representing an estimated gain of +17.69% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 44% of the total disclosed ATEC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Braidwell Lp, American Century Companies Inc, 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
260
Total Reported Value
$961.60M
Largest Holder
Blackrock, Inc.
Largest Position
$97.98M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
63
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% | 11,326,677 | $97,975,756 | $115,305,572 | +$17,329,816 | +17.69% | |
| Braidwell Lp | 2.09% | 6,531,439 | $56,496,947 | $66,490,049 | +$9,993,102 | +17.69% | |
| American Century Companies Inc | 0.02% | 6,521,659 | $56,412,361 | $66,390,489 | +$9,978,128 | +17.69% | |
| Vanguard Capital Management Llc | 0.00% | 5,122,681 | $44,311,191 | $52,148,893 | +$7,837,702 | +17.69% | |
| Bnp Paribas Asset Management Holding S.A. | 0.03% | 3,536,538 | $30,591,053 | $36,001,957 | +$5,410,904 | +17.69% | |
| State Street Corp | 0.00% | 3,481,349 | $30,113,669 | $35,440,133 | +$5,326,464 | +17.69% | |
| Jacobs Levy Equity Management, Inc | 0.10% | 3,352,133 | $28,995,950 | $34,124,714 | +$5,128,764 | +17.69% | |
| Geode Capital Management, Llc | 0.00% | 3,188,894 | $27,589,169 | $32,462,941 | +$4,873,772 | +17.67% | |
| Royal Bank Of Canada | 0.00% | 2,995,410 | $25,910,000 | $30,493,274 | +$4,583,274 | +17.69% | |
| Nuveen, Llc | 0.01% | 2,601,600 | $22,503,840 | $26,484,288 | +$3,980,448 | +17.69% | |
| Tremblant Capital Group | 0.64% | 2,577,799 | $22,297,961 | $26,241,994 | +$3,944,033 | +17.69% | |
| Citadel Advisors Llc | 0.01% | 2,461,400 | $21,291,110 | $25,057,052 | +$3,765,942 | +17.69% | |
| Aqr Capital Management Llc | 0.01% | 2,386,326 | $20,641,719 | $24,292,799 | +$3,651,080 | +17.69% | |
| Emerald Advisers, Llc | 0.43% | 2,104,451 | $18,203,501 | $21,423,311 | +$3,219,810 | +17.69% | |
| Ubs Group Ag | 0.00% | 2,018,823 | $17,462,819 | $20,551,618 | +$3,088,799 | +17.69% | |
| Bank Of America Corp | 0.00% | 1,976,534 | $17,097,019 | $20,121,116 | +$3,024,097 | +17.69% | |
| Nomura Asset Management International Inc. | 0.03% | 1,974,452 | $17,079,000 | $20,099,921 | +$3,020,921 | +17.69% | |
| Cerity Partners Llc | 0.02% | 1,881,945 | $16,278,822 | $19,158,200 | +$2,879,378 | +17.69% | |
| Goldman Sachs Group Inc | 0.00% | 1,654,423 | $14,310,759 | $16,842,026 | +$2,531,267 | +17.69% | |
| Raymond James Financial Inc | 0.00% | 1,639,330 | $14,180,204 | $16,688,379 | +$2,508,175 | +17.69% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 1,564,766 | $13,535,226 | $15,929,318 | +$2,394,092 | +17.69% | |
| Morgan Stanley | 0.00% | 1,535,750 | $13,284,251 | $15,633,935 | +$2,349,684 | +17.69% | |
| Penn Capital Management Company, Llc | 0.82% | 1,488,060 | $12,893,541 | $15,148,451 | +$2,254,910 | +17.49% | |
| Northern Trust Corp | 0.00% | 1,428,231 | $12,354,198 | $14,539,392 | +$2,185,194 | +17.69% | |
| Emerald Mutual Fund Advisers Trust | 0.38% | 1,258,086 | $10,882,444 | $12,807,315 | +$1,924,871 | +17.69% | |
| Granite Investment Partners, Llc | 0.54% | 1,213,570 | $10,497,381 | $12,354,143 | +$1,856,762 | +17.69% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,198,123 | $10,363,764 | $12,196,892 | +$1,833,128 | +17.69% | |
| Aberdeen Group Plc | 0.01% | 1,188,581 | $10,281,226 | $12,099,755 | +$1,818,529 | +17.69% | |
| Freestone Grove Partners Lp | 0.07% | 1,173,065 | $10,147,012 | $11,941,802 | +$1,794,790 | +17.69% | |
| Millennium Management Llc | 0.01% | 1,145,837 | $9,911,490 | $11,664,621 | +$1,753,131 | +17.69% | |
| New York State Common Retirement Fund | 0.01% | 1,100,625 | $9,520,406 | $11,204,363 | +$1,683,957 | +17.69% | |
| Paradigm Capital Management Inc/Ny | 0.26% | 1,088,200 | $9,412,930 | $11,077,876 | +$1,664,946 | +17.69% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 996,637 | $8,620,910 | $10,145,765 | +$1,524,855 | +17.69% |
| Charles Schwab Investment Management Inc | 0.00% | 995,314 | $8,609,466 | $10,132,297 | +$1,522,831 | +17.69% | |
| Fmr Llc | 0.00% | 925,732 | $8,007,585 | $9,423,952 | +$1,416,367 | +17.69% | |
| Deutsche Bank Ag\ | 0.00% | 925,186 | $8,002,859 | $9,418,393 | +$1,415,534 | +17.69% | |
| Vanguard Fiduciary Trust Co | 0.00% | 847,952 | $7,334,785 | $8,632,151 | +$1,297,366 | +17.69% | |
| Two Sigma Investments, Lp | 0.01% | 823,496 | $7,123,240 | $8,383,189 | +$1,259,949 | +17.69% | |
| Panagora Asset Management Inc | 0.02% | 779,004 | $6,738,385 | $7,930,261 | +$1,191,876 | +17.69% | |
| Jpmorgan Chase & Co | 0.00% | 663,062 | $6,349,354 | $6,749,971 | +$400,617 | +6.31% | |
| King Luther Capital Management Corp | 0.02% | 680,706 | $5,888,107 | $6,929,587 | +$1,041,480 | +17.69% | |
| Motley Fool Asset Management Llc | 0.23% | 676,822 | $5,854,510 | $6,890,048 | +$1,035,538 | +17.69% | |
| Rice Hall James & Associates, Llc | 0.28% | 657,864 | $5,690,524 | $6,697,056 | +$1,006,532 | +17.69% | |
| Susquehanna Portfolio Strategies, Llc | 0.08% | 607,576 | $5,255,532 | $6,185,124 | +$929,592 | +17.69% | |
| Russell Investments Group, Ltd. | 0.00% | 491,358 | $4,250,255 | $5,002,024 | +$751,769 | +17.69% | |
| Parkman Healthcare Partners Llc | 0.40% | 449,943 | $3,892,007 | $4,580,420 | +$688,413 | +17.69% | |
| Congress Asset Management Co | 0.02% | 440,638 | $3,811,519 | $4,485,695 | +$674,176 | +17.69% | |
| Pdt Partners, Llc | 0.18% | 387,592 | $3,352,671 | $3,945,687 | +$593,016 | +17.69% | |
| Bank Of Montreal | 0.00% | 366,841 | $3,173,175 | $3,734,441 | +$561,266 | +17.69% | |
| Rock Springs Capital Management Lp | 0.15% | 360,000 | $3,114,000 | $3,664,800 | +$550,800 | +17.69% |
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.