How to Buy Blackrock, Inc. (BLK) Stock

Where to buy BLK

13 brokers in our matrix offer BLK. Verify availability and current fees with each broker before trading.

Broker	Commission	Fractional	Extended	Overnight	Options	OTC access
Charles Schwab (thinkorswim)Review	$0	Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once		~1,130	$0.65	Most (3/5)
E*TRADE (Morgan Stanley)Review	$0 listed			~20	$0.65	Most (4/5)
FidelityReview	$0	Stocks by the Slice, 7,000+ stocks/ETFs, from $1			$0.65	Partial (2+0)
FirstradeReview	$0	~4,000+ tickers, ≥ $5		~1,200	$0	Most (4/5)
Interactive BrokersReview	$0 (Lite) / per-share (Pro)			~10,000	per-contract pricing	Full
Merrill EdgeReview	$0				$0.65	Most (3/5)
MoomooReview	$0				$0	Limited only
Public.comReview	$0				rebate model	Limited only
RobinhoodReview	$0	≥ $1 stocks, market cap ≥ $25M		~1,134	$0	None
SoFi Active InvestingReview	$0				$0	Partial (1+2)
tastytradeReview	$0 stocks				$1.00 open, $0 close (capped at $10 per leg)	Limited only
TradeStationReview	$0 listed				$0.50 / $0.60	Most (4/5)
WebullReview	$0				$0	Limited only

24-Hour / Overnight trading

BLK may be eligible for overnight trading via Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each broker maintains its own eligibility list — confirm before placing an order.

About Blackrock, Inc.

BlackRock is the largest asset manager in the world, with $14.041 trillion in assets under management at the end of December 2025. Its product mix is diverse, with 55% of managed assets in equity strategies, 23% in fixed income, 9% in multi-asset classes, 6% in money market funds, and 5% in alternatives. Passive strategies account for more than two-thirds of long-term AUM, with the company's ETF platform maintaining a leading market share domestically and on a global basis. Product distribution is weighted more toward institutional clients, which, by our calculations, account for around 80% of AUM. BlackRock is geographically diverse, with clients in more than 100 countries and more than one-third of managed assets coming from investors domiciled outside the US and Canada.

Sector

SECURITY BROKERS, DEALERS & FLOTATION COMPANIES

Employees

25,400

Headquarters

NEW YORK, NY

Listed

1999-10-01

Market cap

$163.24B

Frequently asked

Where can I buy Blackrock, Inc. (BLK)?

BLK is offered by 13 brokers in our matrix, including Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley), Fidelity, Firstrade, Interactive Brokers. Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.

Can I buy BLK after hours or overnight?

Yes. BLK is on the 24-hour eligibility list for Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others. Overnight sessions route through ATSs with wider spreads and limit-orders only.

Does Robinhood offer BLK?

Yes. Robinhood offers BLK as a regular exchange-listed security.

Does Fidelity offer BLK?

Yes. Fidelity offers BLK as a regular exchange-listed security.

Does Webull offer BLK?

Yes. Webull offers BLK as a regular exchange-listed security.

Is BLK optionable?

Yes. BLK has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.

Is there a tokenized version of BLK?

Not in our current dataset. The tokenized stock universe (Kraken xStocks, Binance Alpha/Ondo, Robinhood EU, Hyperliquid HIP-3) is expanding quickly — we refresh quarterly.

Can I buy a fractional share of BLK?

Yes. Multiple brokers in the matrix support fractional shares for BLK — see the Fractional column above for per-broker eligibility and minimums.