What is Cost Basis?

Cost basis is the initial worth of an asset used to calculate capital gain or loss for tax purposes. This value may be adjusted due to factors like commissions, wash sales, or corporate events such as stock splits. Sometimes, MEXEM must provide you and the IRS with annual statements reporting the cost basis of sold securities.

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Fees & Interest

How do I update cost basis information for transferred securities?

Cost basis of transferred positions is sent by the transferor after settlement. Until then, MEXEM classifies positions as non-covered with default cost basis. Clients can manually update the cost basis via Client Portal/Account Management. Cost basis of covered positions updates automatically. More info in MEXEM Users' Guide.

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Fees & Interest

How do I determine whether there is a cost to borrow a stock before entering a short sale order in TWS?

Selling stock short with MEXEM involves borrowing shares for delivery to the purchaser. The cost to borrow depends on supply and demand. MEXEM offers tools to estimate this cost, like the Shortable column and the SLB Rates tool in TWS. These rates fluctuate daily and are finalized at day's end. More information about calculating borrowing costs can be found on our website.

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