Government and Policy

Where arithmetic helps, it is worked on the page with hypothetical numbers you can replace with your own. The trading terms define the account mechanics these pages refer to.

Start with the page on the kind of news you most often trade around. Each one ends with what to check before the next announcement: the filing, the notice or the calendar where the decision will first appear, so the news reaches you as information you were already watching for.

To check what you know afterward, try the economy quiz. The margin interest calculator and the merger spread calculator run two of the sums from this section with your own numbers.

Articles

• How an SEC Rule Change Reaches Your Brokerage Account

  The path from SEC proposal to comment period, final rule, effective and compliance dates, and broker rollout, plus how FINRA rules get there and how to track both.

• How Merger Reviews Move a Target Company's Share Price

  Why a takeover target trades below the offer price, what the deal spread says about regulatory and shareholder risk, and how stock-for-stock deals differ.

• How Tariffs Reach Stock Prices, From Import Costs to Margins

  A tariff is a tax the importer pays. How that cost moves through prices and margins, which companies carry it, which may gain, and what to read in filings.

• What a Government Shutdown Means for Traders

  When US federal funding lapses, markets keep trading. What does stop: scheduled data releases, some SEC staff work, and payments to government contractors.