How to Buy Oceaneering International Inc. (OII) Stock

Where to buy OII

13 brokers in our matrix offer OII. 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

OII 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 Oceaneering International Inc.

Oceaneering International Inc is a provider of engineered services and products and robotic solutions to the offshore energy, defense, aerospace, manufacturing, and entertainment industries. A majority of its products are produced for the offshore oil and gas market. The company's business segments are Integrity Management and Digital Solutions, Subsea Robotics, Manufactured Products, Offshore Projects Group, and Aerospace and Defense Technologies. Maximum revenue is generated from its Subsea Robotics segment, which provides remotely operated vehicles (ROVs) for drill support and vessel-based services, underwater surveys, tooling, and other activities. Geographically, the company derives its key revenue from the United States, followed by Africa, Norway, Brazil, and other regions.

Sector

OIL & GAS FIELD SERVICES, NEC

Employees

11,100

Headquarters

HOUSTON, TX

Listed

1975-10-30

Market cap

$3.83B

Frequently asked

Where can I buy Oceaneering International Inc. (OII)?

OII 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 OII after hours or overnight?

Yes. OII 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 OII?

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

Does Fidelity offer OII?

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

Does Webull offer OII?

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

Is OII optionable?

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

Is there a tokenized version of OII?

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 OII?

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