Fed's First Rate Hike Adds Modest NII Upside, Not Enough to Change WAIT Stance

What happened

The Federal Reserve raised its benchmark rate by 25 basis points on September 16, 2026, the first hike since July 2023, which is estimated to add roughly $81 million annually to Interactive Brokers' net interest income. This positive is small relative to the firm's total revenue and does little to alter the broader picture of a high-quality franchise trading at ~21x trailing earnings with elevated dependence on trading activity and rate levels. The company's own disclosures show a $335 million annual NII impact per 100 basis point rate change, so a single quarter-point hike is only a minor tailwind. Meanwhile, the DeepValue master report maintains a WAIT rating with an implied base-case value of $75 and attractive entry around $65, as the stock's 58% 12-month run leaves limited margin of safety. The news does not address concerns about account growth normalization, expense inflation, or regulatory risks that are central to the current valuation debate.

Implication

The $81 million annual NII boost from the Fed's hike is immaterial relative to IBKR's $6.2 billion in 2025 revenue and does not change the stock's risk-reward profile at $75.97. The master report's scenarios remain intact, with a base-case implied value of $75 and bear-case downside to $65, suggesting limited upside from current levels. A single rate hike may prove temporary if the Fed reverses course, and the company's NII sensitivity underscores the cyclicality of earnings. Investors should continue to monitor monthly metrics for DARTs, margin balances, and account growth, as well as expense trends, before reconsidering the WAIT rating. The more attractive entry point remains a pullback toward the mid-$60s, where the margin of safety would better compensate for cyclical and regulatory risks.

Thesis delta

The overall investment thesis remains unchanged: Interactive Brokers is a high-quality, technology-driven broker with strong growth and margins, but the stock is fairly valued with limited upside. The Fed's rate hike is a small positive for net interest income but does not offset concerns about trading activity normalization, expense growth, and regulatory risk. The WAIT rating and $65 attractive entry level are reaffirmed.