How to Buy Compass Minerals International, Inc. (CMP) Stock

Where to buy CMP

13 brokers in our matrix offer CMP. 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

CMP 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 Compass Minerals International, Inc.

Compass Minerals currently produces two primary products: salt and specialty potash fertilizer. The company's main assets include rock salt mines in Ontario, Louisiana, and the United Kingdom. The fertilizer is produced from a brine operation at the Great Salt Lake in Utah that produces sulfate of potash and magnesium chloride. Compass' salt products are used for deicing and also by industrial and consumer end markets. The firm's sulfate of potash is used by growers of high-value crops that are sensitive to standard potash.

Sector

MINING & QUARRYING OF NONMETALLIC MINERALS (NO FUELS)

Employees

1,849

Headquarters

OVERLAND PARK, KS

Listed

2003-12-12

Market cap

$1.24B

Frequently asked

Where can I buy Compass Minerals International, Inc. (CMP)?

CMP 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 CMP after hours or overnight?

Yes. CMP 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 CMP?

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

Does Fidelity offer CMP?

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

Does Webull offer CMP?

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

Is CMP optionable?

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

Is there a tokenized version of CMP?

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 CMP?

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