Guide
Stock Splits and Reverse Splits: What Happens to Cost Basis
A split changes the share count and the share price, not the total you paid. This is the basis arithmetic, the cash paid for a fractional share, and when it becomes a sale.
Guides
Crypto guides, answered directly
Each guide opens with the answer to the question in its title. Longer pieces include a jump-link contents rail so you can skip to the part you need.
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Guide
How T-Bill Auctions Work: Bids, the High Rate and the Discount
Treasury bills are bought below face and mature at face. Competitive bids set the high rate, every winner is paid that same rate, and one formula turns it into the price you actually pay.
Guide
Tracking Difference vs Tracking Error: A Gap and Its Volatility
Tracking difference is how far a fund fell behind its index over a period. Tracking error is how much that gap wobbled. A fund can have almost no wobble and still lag every single year.
Guide
Contango and Backwardation: What the Curve Costs to Hold
A futures curve is a price for storage, financing and time. The shape only reaches your account through the roll, so a contango market costs money while you keep rolling and stops when you stop.
Guide
Futures Expiry, Settlement and Roll: Holding a Contract Into Its Last Week
WTI ends in a delivery cycle at Cushing, Brent in an option to cash-settle against the ICE Brent Index. Settlement is a daily price, expiry is a deadline, and the roll is where the money moves.
Guide
Token Allowances: How to Review and Revoke Approvals
A token allowance is a standing permission that lets a contract move your tokens. Reviewing and revoking approvals is a security habit, and it is not the same as disconnecting a site.
Guide
Repo Rates vs Central Bank Policy Rates: A Practical Guide
A repo rate is the price of collateralised funding; a policy rate is the central bank's administered target. They are linked by arbitrage and separated by collateral, balance sheet and timing.
Guide
Futures Basis vs Perpetual Funding: Two Different Costs
A dated future charges for time through the basis; a perpetual charges through periodic funding. One is locked in at entry, the other resets every few hours and can change sign.
Guide
Pending, Dropped and Replaced Ethereum Transactions
Every Ethereum account numbers its transactions. That nonce explains why a low-fee transaction blocks later ones, why a dropped transaction can still land, and how a replacement wins.