Rock Springs Capital Management LP
Position in ATEC — Alphatec Holdings, Inc.
CIK 1595725
Baltimore, MD
Position in ATEC
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$3,114,000
-$694,000 QoQ
Shares Held
360,000
+2.9% QoQ
Ownership
0.233%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
#51
of 265 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ATEC Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Jun 30, 2026Rock Springs Capital Management LP holds $146,094,606 across 10 Medical Devices names. ATEC ranks #8 (2.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PEN |
Penumbra Inc
|
115,750 | $36,548,062 | |
| 2 | IRTC |
iRhythm Holdings, Inc.
|
269,650 | $32,074,867 | |
| 3 | DXCM |
Dexcom Inc
|
343,000 | $23,101,050 | |
| 4 | BSX |
Boston Scientific Corp
|
528,500 | $22,556,380 | |
| 5 | INSP |
Inspire Medical Systems, Inc.
|
244,000 | $10,884,840 | |
| 6 | SYK |
Stryker Corp
|
29,000 | $9,130,360 | |
| 7 | MOBI |
Mobia Medical, Inc.
|
418,200 | $5,603,880 | |
| 8 | ATEC |
Alphatec Holdings, Inc.
This page
|
360,000 | $3,114,000 |
All Filings in ATEC
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $3,114,000 | 360,000 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $3,808,000 | 350,000 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $6,364,600 | 302,500 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $4,398,350 | 302,500 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $2,969,250 | 267,500 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $2,712,450 | 267,500 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $1,836,000 | 200,000 | Shares | Sole | 2025-02-14 | |
| No filing history on record for this holder in this stock. | ||||||