Whale Analyzer
NTRA Institutional Holders and 13F Ownership
Compare 8 tracked holders of NTRA, their reported positions and disclosed changes. Coverage is limited to the investors tracked by Whale Analyzer; these records do not establish all shareholders or current trades. Stanley Druckenmiller is the largest reported holder at $865M; the top five funds control 95.3% of reported ownership; institutions were net buying last quarter (6 increased, 1 reduced); the stock trades above the aggregate whale cost basis of $104.85. Top tracked holders include Stanley Druckenmiller, Philippe Laffont, Lee Ainslie, and Cathie Wood.
Continue to the live NTRA dashboardTop holders
| Investor | Reported value | Shares | Change | Report date |
|---|---|---|---|---|
| Stanley Druckenmiller 13F portfolio Duquesne Family Office holdings | $864.9M | 3.2M | Increased | 2026-06-30 |
| Philippe Laffont 13F portfolio Coatue Management holdings | $680.0M | 2.5M | Reduced | 2026-06-30 |
| Lee Ainslie 13F portfolio Maverick Capital holdings | $368.3M | 1.4M | Increased | 2026-06-30 |
| Cathie Wood 13F portfolio ARK Investment Management holdings | $187.0M | 688.9K | Increased | 2026-06-30 |
| Andreas Halvorsen 13F portfolio Viking Global Investors holdings | $106.1M | 390.7K | New | 2026-06-30 |
| Samuel Isaly 13F portfolio OrbiMed Advisors holdings | $71.1M | 262.0K | Held | 2026-06-30 |
| Gavin Baker 13F portfolio Atreides Management holdings | $28.3M | 104.4K | New | 2026-06-30 |
| Joseph Edelman 13F portfolio Perceptive Advisors holdings | $9.4M | 34.7K | New | 2026-06-30 |
Ownership concentration
Reported ownership of NTRA is highly concentrated across tracked institutions.
- Single largest holder: 37.4% of reported ownership
- Top 5 holders: 95.3%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 8 tracked institutions, 6 increased, 1 reduced, 1 held. Net positioning is net buying.
- Stanley Druckenmiller — Duquesne Family Office ($864.9M) (▲ 4.0% qoq shares) · avg cost $54.49
- Philippe Laffont — Coatue Management ($680.0M) (▼ 1.4% qoq shares) · avg cost $192.24
- Lee Ainslie — Maverick Capital ($368.3M) (▲ 15.8% qoq shares) · avg cost $61.11
- Cathie Wood — ARK Investment Management ($187.0M) (▲ 0.7% qoq shares) · avg cost $47.57
- Andreas Halvorsen — Viking Global Investors ($106.1M) · avg cost $186.36
- Samuel Isaly — OrbiMed Advisors ($71.1M) (→ 0.0% qoq shares)
- Gavin Baker — Atreides Management ($28.3M) · avg cost $186.36
Whale cost basis vs current price
The aggregate tracked cost basis is $104.85 versus a current price of $328.93, so NTRA trades above its cost basis (+213.7%). Average unrealized P&L across tracked holders: 293%.
Sector positioning — Health Care
NTRA sits within the Health Care sector alongside 221 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live NTRA dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
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Learn more in Whale Analyzer Academy
Deepen your read on NTRA with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns NTRA stock?
Whale Analyzer tracks 8 public institutional holders of NTRA with a combined reported value of $2.32B. See the holder table above for the largest tracked positions.
Which top funds are buying NTRA?
Tracked institutions were net buying last quarter — 6 increased, 1 reduced, 1 held. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is NTRA ownership?
The top five tracked holders report 95.3% of aggregate ownership.
Is NTRA above or below the whale cost basis?
The aggregate tracked cost basis is $104.85 versus a current price of $328.93 (+213.7%).
What does 13F ownership mean for NTRA?
These are historical reported positions from tracked filers, not real-time ownership or a complete shareholder register. Use the interactive NTRA dashboard to explore them, or read our 13F Alpha Signals Guide.