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NBIX Institutional Ownership & 13F Holders | SmartMoneyDB

NBIXNEUROCRINE BIOSCIENCES INC

COM · CUSIP 64125C109

Smart Money Ownership

Of the 15 tracked institutions holding NBIX, 9 have a 3-year clone track record — 7 of them beat the S&P. Average holder's clone alpha: +3.7pt. It's a gauge of who owns the name, not just how many.

Jim Simons

$318.7M · 0.5% of book

ARMISTICE CAPITAL, LLC

$95.4M · 3.1% of book

+4.1pt

NBIX (NEUROCRINE BIOSCIENCES INC) Institutional Ownership Summary

Among the 15 tracked institutional investors we monitor, NBIX (NEUROCRINE BIOSCIENCES INC) is held with a combined value of $5.26B across 39,189,504 shares. The largest holder is BlackRock, Inc. with a position worth $1.76B (0.03% of their portfolio). 9 funds increased their holdings. 6 funds reduced their position.

Total Institutional Value

$5.26B

Total Shares Held

39,189,504

Institutional Holders

% of Shares Outstanding

39.0%

of 100.55M shares · SEC 2026-04-28

Days to Cover

4.9-3.5%

5.33M shares short · FINRA 2026-07-15

Tracked 13F institutions hold 39.0% of NBIX's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-04-28), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

AQR CAPITAL MANAGEMENT LLC+51% shares~$219.8M MILLENNIUM MANAGEMENT LLC+182% shares~$106.0M BlackRock, Inc.+4% shares~$72.7M Gotham Asset Management, LLC+114% shares~$25.2M RENAISSANCE TECHNOLOGIES LLC+8% shares~$23.6M

13F Institutional Holders

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AQR CAPITAL MANAGEMENT LLC

RENAISSANCE TECHNOLOGIES LLC

0.50% of book+8.0%

$318.67M

WELLINGTON MANAGEMENT GROUP LLP

0.03% of book-20.4%

$183.06M

MILLENNIUM MANAGEMENT LLC

0.07% of book+181.7%

$164.34M

ARMISTICE CAPITAL, LLC

3.15% of book-11.7%

$95.38M

Gotham Asset Management, LLC

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$1.76B	13,385,607	0.03%	+4.3%
2	VANGUARD GROUP INC	$1.38B	9,700,301	0.02%	-0.1%
3	AQR CAPITAL MANAGEMENT LLC	$650.66M	4,938,967	0.30%	+51.0%
4	STATE STREET CORP	$573.67M	4,354,526	0.02%	+2.6%
5	RENAISSANCE TECHNOLOGIES LLC	$318.67M	2,418,897	0.50%	+8.0%
6	WELLINGTON MANAGEMENT GROUP LLP	$183.06M	1,389,539	0.03%	-20.4%
7	MILLENNIUM MANAGEMENT LLC	$164.34M	1,247,447	0.07%	+181.7%
8	ARMISTICE CAPITAL, LLC	$95.38M	724,000	3.15%	-11.7%
9	Gotham Asset Management, LLC	$47.44M	360,136	0.15%	+113.6%
10	FMR LLC	$20.40M	154,867	0.00%	+119.8%

Congress Trading

1 member · 2 disclosed trades in NBIX

Member	Type	Amount	Date
Lisa McClain	Sell	$1,001 - $15,000	Jun 17, 2025
Lisa McClain	Buy	$1,001 - $15,000	Jun 11, 2025

Frequently Asked Questions

Which institutional investors own the most NBIX stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of NBIX with a position worth $1.76B, representing 0.03% of their portfolio. In total, 15 institutional investors hold NBIX with a combined value of $5.26B.

What percentage of NBIX is owned by institutional investors?

Institutional investors hold $5.26B worth of NBIX stock across 15 positions. The largest institutional holder is BlackRock, Inc. with $1.76B in holdings.

What is a 13F filing and why does it matter for NBIX?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For NBIX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track NBIX institutional moves

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