Alphatec Holdings, Inc.
US ˙ NasdaqGS ˙ US02081G2012

SecurityATEC / Alphatec Holdings, Inc.
InstitutionEntropy Technologies, LP
Latest Disclosed Ownership28,685 shares
Latest Disclosed Value $ 312,093
Entropy Technologies, LP reports 127.79% increase in ownership of ATEC / Alphatec Holdings, Inc.

On May 14, 2026 - Entropy Technologies, LP filed a 13F-HR form disclosing ownership of 28,685 shares of Alphatec Holdings, Inc. (US:ATEC) valued at $312,093 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,593 shares of Alphatec Holdings, Inc.. This represents a change in shares of 127.79% during the quarter. The current value of the position is $220,301 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)
2026-05-14 2026-03-31 13F ALPHATEC HOLDINGS ORD COM NEW 02081G201 28,685 16,092 127.79 312 18.18 0.0144
2026-02-13 2025-12-31 13F ALPHATEC HOLDINGS ORD COM NEW 02081G201 12,593 -9,858 -43.91 265 -19.02 0.0144
2025-11-13 2025-09-30 13F ALPHATEC HOLDINGS ORD COM NEW 02081G201 22,451 22,451 326 0.0244
2025-01-28 2024-12-31 13F ALPHATEC HOLDINGS ORD COM NEW 02081G201 0 -21,623 -100.00 0 -100.00
2024-11-04 2024-09-30 13F ALPHATEC HOLDINGS ORD COM NEW 02081G201 21,623 2,800 14.88 120 -38.78 0.0126
2024-08-12 2024-06-30 13F ALPHATEC HLDGS COM NEW 02081G201 18,823 18,823 197 0.0213
2024-05-08 2024-03-31 13F ALPHATEC HLDGS COM NEW 02081G201 0 -40,924 -100.00 0 -100.00
2024-02-14 2023-12-31 13F ALPHATEC HLDGS COM NEW 02081G201 40,924 40,924 618 0.1146
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.