Alphatec Holdings, Inc.
DE ˙ DB ˙ US02081G2012
6,45 € ↑0,35 (5,74%)
2026-06-03
DEL PRIS
SecurityDE:L1Z1 / Alphatec Holdings, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership286,467 shares
Latest Disclosed Value $ 3,116,761
Engineers Gate Manager LP reports 24.98% increase in ownership of L1Z1 / Alphatec Holdings, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 286,467 shares of Alphatec Holdings, Inc. (DE:L1Z1) valued at $2,685,342 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 229,209 shares of Alphatec Holdings, Inc.. This represents a change in shares of 24.98% during the quarter. The current value of the position is $1,847,712 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 286,467 57,258 24.98 3,117 -35.38 0.0390
2026-02-17 2025-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 229,209 -85,723 -27.22 4,823 5.31 0.0572
2025-11-14 2025-09-30 13F ALPHATEC HLDGS COM NEW 02081G201 314,932 -32,407 -9.33 4,579 18.78 0.0524
2025-08-14 2025-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 347,339 136,006 64.36 3,855 79.97 0.0480
2025-05-15 2025-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 211,333 211,333 2,143 0.0361
2025-02-14 2024-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 0 -87,794 -100.00 0 -100.00
2024-11-14 2024-09-30 13F ALPHATEC HLDGS COM NEW 02081G201 87,794 49,997 132.28 488 23.86 0.0095
2024-08-14 2024-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 37,797 20,641 120.31 395 66.95 0.0089
2024-05-15 2024-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 17,156 -29,973 -63.60 237 -66.85 0.0062
2024-02-14 2023-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 47,129 -110,183 -70.04 712 -65.10 0.0203
2023-11-14 2023-09-30 13F ALPHATEC HLDGS COM NEW 02081G201 157,312 5,308 3.49 2,040 -25.36 0.0754
2023-08-14 2023-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 152,004 -4,471 -2.86 2,733 11.96 0.1033
2023-05-15 2023-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 156,475 109,746 234.86 2,441 323.05 0.1020
2023-02-14 2022-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 46,729 8,812 23.24 577 74.32 0.0347
2022-11-14 2022-09-30 13F ALPHATEC HLDGS COM NEW 02081G201 37,917 -92,094 -70.84 331 -61.06 0.0206
2022-08-15 2022-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 130,011 98,515 312.79 850 134.81 0.0312
2022-05-16 2022-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 31,496 17,056 118.12 362 119.39 0.0142
2022-02-14 2021-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 14,440 14,440 165 0.0074
2021-08-16 2021-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 0 -93,956 -100.00 0 -100.00
2021-05-17 2021-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 93,956 -50,971 -35.17 1,484 -29.47 0.0735
2021-02-16 2020-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 144,927 97,472 205.40 2,104 567.94 0.0912
2020-11-16 2020-09-30 13F ALPHATEC HLDGS COM NEW 02081G201 47,455 7,043 17.43 315 65.79 0.0148
2020-08-17 2020-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 40,412 -94,566 -70.06 190 -59.23 0.0097
2020-05-15 2020-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 134,978 59,364 78.51 466 -13.06 0.0336
2020-02-14 2019-12-31 13F ALPHATEC HOLDINGS COM NEW 02081G201 75,614 27,375 56.75 536 121.49 0.0236
2019-11-14 2019-09-30 13F ALPHATEC HOLDINGS COM NEW 02081G201 48,239 48,239 242 0.0123
2019-08-14 2019-06-30 13F ALPHATEC HOLDINGS COM NEW 02081G201 0 -44,003 -100.00 0 -100.00
2019-05-15 2019-03-31 13F ALPHATEC HOLDINGS COM NEW 02081G201 44,003 44,003 117 0.0071
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.