Skip to main content

RockFlow Transaction Fees

RockFlow believes that providing best execution prices is in the best interests of users. We committed to let our users get the best available prices for stocks and ETFs across exchanges.

RockFlow hope users can experience better trading with low costs: Low commissions with no added spreads, ticket charges, platform fees, or account minimums.

1. Commission Fee

1.1 U.S. Stocks

TypeCharged ByFeePricing
CommissionRockFlowFractional Share Commission (Number of shares in a single transaction < 1 share)$0.006/share × number of shares
Min. Charge/Order: Max($0.4, Trade Value × 0.15%)
Max. Charge/Order: Trade Value × 2%
Whole Share Commission (Number of shares in a single transaction > 1 share)$0.006/share × number of shares
Min. Charge/Order: Max($1,Trade Value × 0.15% )
Third Party Fee¹SEC (U.S. Securities and Exchange Commission)SEC Membership Fee (Charged for sell orders only)0.000008 × Trade Value
Min. Charge/Order: $0.01
FINRA(U.S. Financial Industry Regulatory Authority )Trading Activity Fee (Charged for sell orders only)$0.0.000145 / Share × number of shares
Min. Charge/Order: $0.01
Max. Charge/Order: $7.27
ExchangesExchange Fee Different exchanges and transaction types have different fees

¹If there is any change in the fees charged by third parties such as exchanges and regulators, RockFlow will adjust the fees it charges on their behalf accordingly.

²To protect clients' interests, RockFlow charges the fractional share trading commission up to 2% of the trade value respectively. If the calculated maximum commission per order is lower than the minimum commission per order, RockFlow would charge the lowest one:

For example, there is a user who buys 0.1 shares of stock at a price of $100 in one order. Since the Min. Charge/Order($0.4) > the Max. Charge/Order($0.02), RockFlow will charge a commission of $0.02 as the lowest price.

Pricing MethodsPricing Methods ComparisionOther Brokers ChargeRockFlow Charges
Min. Charge/Order$0.4
Max. Charge/Order$100/Share × 0.1 Shares × 2%=$0.02✅The lowest.

(3)In order to provide the optimal execution price, RockFlow will transmit the order to the optimal exchange for execution, so the fee will fluctuate.

1.2 Hong Kong Stocks

TypeCharged ByFeePricing
CommissionRockFlowCommission0.03% × Trade Value + HKD 10
Third Party Fee¹HKEXTrading Fee0.005% × Trade Value
HKSCCSettlement Fee0.002% × Trade Value
Min. HKD 2 and Max. HKD 100 / Order
SFCTransaction Levy0.0027% × Trade Value
Government of Hong KongStamp Duty0.13% × Trade Value
(Rounding up to the nearest integer)
Financial Reporting CouncilFRC Transaction Levy0.00015% × Trade Value

¹If there is any change in the fees charged by third parties such as exchanges and regulators, RockFlow will adjust the fees it charges on their behalf accordingly.

1.3 U.S. Stocks Options (Baby bull & Baby bear)

TypeCharged ByFeePricing
CommissionRockFlowCommission$0.9/contract
Min. $1.9/Order
Third Party Fee¹SEC (U.S. Securities and Exchange Commission)SEC Membership Fee (Charged for sell orders only)$0.0000229 × Trade Value
Min. $0.01/Order
FINRA(U.S. Financial Industry Regulatory Authority )Trading Activity Fee (Charged for sell orders only)$0.00244× Quantity Sold
Min. $0.01/Order
Exchanges²Option Regulatory Fee0.03025/contract
OCC (Options Clearing Corporation)OCC Clearing FeeTrades of 1-2750 contracts: $0.02/contract
Trades > 2750 contracts: $55/trade
ExchangesExchange FeeVaries by Exchanges and transaction Type

¹If there is any change in the fees charged by third parties such as exchanges and regulators, RockFlow will adjust the fees it charges on their behalf accordingly.

²The OPtions Regulatory Fee is charged by the following exchanges: AMEX, BATS, BOX, CBOE, CBOE2, EDGX, EMERALD, ISE, GEMINI, MERCURY, MIAX, NOM, NASDAQBX, PSE, PHLX.

  • When options contracts expire in-the-money, there may be exercise and stock settlement fees incurred.

2. Margin Fee and Securities Financing Fee

2.1 Margin Fee

CurrencyLong Margin Rate
USD7.375%
HKD7.375%
  • To adapt to changes in currency exchange rates, Long Margin Rate may be adjusted periodically.
  • The number of financing days is calculated based on 365 natural days, and interest is calculated on a calendar day(If you return the money within the day you borrow, the interest would be free. Otherwise, interest would be charged). Long Margin Interest formula: financing amount × long margin rate × actual financing days/365.
  • Long Margin Interest formula: financing amount × long margin rate × actual financing days/365.

2.2 Securities Financing Fee

  • Securities financing fee depends on the stocks. Please refer to the daily statement when the actual order is placed.
  • Securities Financing Interest formula: Market value of securities lending × interest rate of short selling × actual securities lending days/365.
  • If the account is in arrears after deducting interest in the current month, the amount of the arrears will be included in the amount of this month's financing.

3. Foreign Exchange Fee

Charged ByTypeFee
RockFlowApplication Fee
(Refund if application failed)
$0.003/Share
Min. $1/Order
RockFlowInterest Rate8%
  • Securities financing fee depends on the stocks. Please refer to the daily statement when the actual order is placed.
  • Securities Financing Interest formula: Market value of securities lending × interest rate of short selling × actual securities lending days/365.
  • If the account is in arrears after deducting interest in the current month, the amount of the arrears will be included in the amount of this month's financing.

ATN: The current commission rates have included benefits for the promotion period. RockFlow reserves the right to adjust the commission rate at any time according to new promotion plans and market changes. Relevant adjustments will be notified in a timely manner through the official website, customer service, text messages, emails and other channels. Please pay attention to commission changes.

Contact us