BlackRock, Inc.

Holdings History for BIOGEN INC. - COM (BIIB)

Symbol: BIIB on Nasdaq
Investment type: Equity / COM
Latest Disclosed Shares Owned: 12,506,681 shares
Security Ownership %: 8.5%

Shares, Excluding Options vs Price

Value, Excluding Options

BlackRock, Inc. ownership in BIOGEN INC. COM (BIIB)

17 Apr 2025 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 12,506,681 shares of BIOGEN INC. COM (BIIB). This represents 8.5% ownership of the company. This is the first filing by BlackRock, Inc. disclosing ownership of BIOGEN INC. COM (BIIB).

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
BlackRock, Inc.	8.5%		$1,502,927,856	12,506,681			$120.17	13G/A	31 Mar 2025	17 Apr 2025, 09:35

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2025	0.04%	+0%	$2,068,134,447	14,763,952	+1,208,486	+8.9%	$140.08	Q3 2025
30 Jun 2025	0.03%	-0%	$1,702,431,056	13,555,466	-1,655,570	-11%	$125.59	Q2 2025
31 Mar 2025	0.04%	-0%	$2,081,478,238	15,211,036	-262,674	-1.7%	$136.84	Q1 2025
31 Dec 2024	0.05%	+0%	$2,366,239,663	15,473,710	+126,669	+0.83%	$152.92	Q4 2024
30 Sep 2024	0.06%	0%	$2,974,870,411	15,347,041	0		$193.84	Q3 2024

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.