BRK.BBERKSHIRE HATHAWAY Class B

CSNew York Stock Exchange (XNYS)·USD

Identity

Security key: 12810
Ticker: BRK.B
Type: CS — Common Stock
Exchange: New York Stock Exchange(XNYS)
Venue group: NYSE
Operating MIC: XNYS
Market: stocks
Locale: us
Currency: USD
Listed: 1996-05-09
Round lot: 40
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: BRK / B

Detail

Enriched 2026-08-14 20:47

Market cap: $1,091,761,994,940
Shares outstanding (class): 1,398,308,677
Shares outstanding (weighted): 2,140,709,794
SIC: 6331 FIRE, MARINE & CASUALTY INSURANCE
Employees: 387,800
Location: OMAHA, NE
Homepage: https://www.berkshirehathaway.com
Description: Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis. Berkshire generated close to $371.4 billion in operating revenue in during 2025.

Market cap and share counts drift.

Funds holding this security

537 funds · 567 positions · $122.59B reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$27.22B	1.37%	56,802,870 NS	FIGI
VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS	VOO	$22.33B	1.57%	46,598,543 NS	FIGI
iShares Core S&P 500 ETF iShares Trust	IVV	$11.30B	1.57%	23,583,708 NS	FIGI
N/A —	—	$10.24B	1.57%	21,362,239 NS	FIGI
VANGUARD VALUE INDEX FUND VANGUARD INDEX FUNDS	VTV	$6.90B	3.06%	14,393,808 NS	FIGI
State Street(R) Financial Select Sector SPDR(R)… SELECT SECTOR SPDR TRUST	XLF	$5.95B	12.46%	12,423,151 NS	FIGI
VANGUARD INSTITUTIONAL INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS	—	$4.95B	1.57%	10,339,272 NS	FIGI
iShares Russell 1000 Value ETF iShares Trust	IWD	$2.03B	2.91%	4,235,666 NS	FIGI
State Street(R) SPDR(R) Portfolio S&P 500(R) ETF SPDR SERIES TRUST	SPYM	$1.85B	1.57%	3,855,405 NS	FIGI
iShares S&P 500 Growth ETF iShares Trust	IVW	$1.85B	3.03%	3,853,540 NS	FIGI
Fidelity Contrafund Fidelity Contrafund	—	$1.62B	1.02%	3,370,500 NS	FIGI
State Street(R) SPDR(R) Portfolio S&P 500(R) Gr… SPDR SERIES TRUST	SPYG	$1.26B	3.03%	2,633,831 NS	FIGI
JPMorgan Large Cap Growth Fund JPMorgan Trust II	—	$1.25B	1.16%	2,603,712 NS	FIGI
iShares Core S&P Total U.S. Stock Market ETF iShares Trust	ITOT	$1.10B	1.39%	2,302,553 NS	FIGI
VANGUARD LARGE-CAP INDEX FUND VANGUARD INDEX FUNDS	VV	$989.49M	1.54%	2,064,875 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERBRK.B
FIGI_COMPOSITEBBG000DWG505
FIGI_SHARE_CLASSBBG001S90346
CIK0001067983
ISINUS0846707026
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Financials
Industry: Insurance
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Berkshire Hathaway is a common stock whose primary SIC code indicates fire, marine, and casualty insurance, placing it in the financial sector and insurance industry.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.