House Call
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What Is a House Call?
A house call is a type of margin call where a brokerage firm demands an investor deposit additional funds because their account equity has fallen below the firm's own "house" maintenance requirement, which is stricter than regulatory minimums.
A house call is a specific, formal notification from a brokerage firm alerting an individual trader or investor that the equity in their margin account has dropped below the firm's specific, internal maintenance standards. To fully understand the gravity and mechanics of a house call, one must first clearly distinguish between the baseline regulatory requirements set by national governing bodies and the more conservative "house" requirements established by the brokerage firms themselves. In the United States, the Federal Reserve's Regulation T sets the initial margin requirement at 50%, which is the minimum amount of equity a trader must provide to open a new leveraged position. Once a position is established, the Financial Industry Regulatory Authority (FINRA) mandates a minimum "maintenance" margin requirement of 25% of the total market value of the securities held in the account. This 25% represents the absolute legal floor; if your equity falls below this level, a regulatory maintenance call is triggered. However, brokerage firms are legally permitted—and, from a risk management perspective, often strongly encouraged—to establish their own, much stricter maintenance standards to protect the firm's capital from rapid market downturns. These are universally known as "house requirements." For instance, while the regulator says you only need 25% equity, a broker might decide that for your specific account or for a particular set of volatile stocks, you must maintain at least 30%, 35%, or even 40% equity. If your account equity falls into the gap—below the 35% house requirement but still above the 25% FINRA minimum—you will receive a "house call." In essence, a house call is a margin call triggered by the broker's proprietary safety buffer rather than the regulator's legal minimum. The broker is effectively communicating that your leverage has increased to a point where they are no longer comfortable extending you credit without additional collateral.
Key Takeaways
- A house call is triggered by the brokerage's internal risk rules, not just federal regulations.
- Brokerages have the right to set "house" maintenance requirements higher than the regulatory minimum of 25%.
- Common house requirements are 30% to 35% or higher for volatile stocks.
- Failure to meet a house call can result in the immediate liquidation of assets.
- House calls help brokerages manage their own risk exposure to client defaults.
- Traders must know their broker's specific house rules to avoid unexpected calls.
How a House Call Works
The operational mechanism of a house call is rooted in the margin agreement—a legally binding document every trader must sign when opening a margin-enabled account. Hidden within the extensive fine print of these agreements is a critical clause that grants the brokerage firm the unilateral right to set margin requirements higher than the regulatory minimums and, perhaps more importantly, to change those requirements at any time without any prior notice to the client. Consider a scenario where you hold a concentrated portfolio of high-growth, high-volatility technology stocks. While the industry-standard maintenance margin is 25%, your brokerage's risk management algorithm might determine that these specific assets are currently too risky, subsequently raising your "house" maintenance requirement to 40%. If the market price of your stocks declines and your equity percentage slips to 38%, you immediately represent an unacceptable level of risk to the firm. Even though you are still technically and legally compliant with FINRA's 25% floor, you have violated the house rules of your specific broker. Once the 40% threshold is breached, the broker will issue a house call, which is a formal demand for you to either deposit additional cash into the account or sell off a portion of your securities to bring your equity percentage back up to the required 40% level. This notification is typically delivered through an automated email, a push notification on a mobile trading app, or, in some cases, a direct phone call from a margin clerk. The time frame for meeting a house call is often much shorter than people expect—frequently requiring action within 24 hours. If the call is not met promptly, the broker has the absolute right to "sell you out"—liquidating your positions at current market prices without further consultation or your consent to cover the shortfall. In periods of extreme market stress or "gap" moves, brokers may even bypass the house call notification entirely and move straight to immediate liquidation to preserve the firm's financial integrity.
House Call vs. Regulatory Maintenance Call
While both a house call and a regulatory maintenance call (often just called a "margin call") require the same action—adding equity to the account—they differ in their origin and the flexibility of the broker. A regulatory call is a matter of law; the broker must enforce it to remain in compliance with FINRA or SEC rules. There is virtually no room for negotiation or extension when a regulatory floor is breached. A house call, by contrast, is a matter of firm policy. Because the equity is still above the 25% legal minimum, a broker might occasionally grant a small amount of extra time to an established client with a long history of meeting calls, or they might allow for a "workout" period if the market shows signs of stabilizing. However, traders should never count on this leniency. Modern electronic trading platforms are increasingly programmed to handle house calls with cold, algorithmic precision. The house call serves as an early warning system; if you are receiving house calls, you are likely over-leveraged and at serious risk of a catastrophic regulatory liquidation if the market continues its downward trend. Understanding this hierarchy of calls is fundamental to survival in the world of margin trading.
Key Elements of Brokerage Discretion
Specific Securities: Brokers often assign different house requirements to different stocks. A blue-chip stock might have a 30% house requirement, while a volatile small-cap stock might have a 50% or even 100% requirement (meaning no margin allowed). Market Conditions: During periods of extreme market volatility, brokers may universally raise house requirements to buffer against rapid price crashes. Account Concentration: If your account is heavily concentrated in a single stock, the broker may impose a higher house requirement because your risk is not diversified.
Important Considerations for Traders
The most dangerous aspect of a house call is that it can catch traders off guard. You might be calculating your risk based on the 25% regulatory minimum, thinking you have plenty of room, only to be hit with a liquidation order because you breached the 35% house limit. Traders must read their broker's margin schedule carefully. Do not assume all stocks have the same margin requirements. Furthermore, remember that brokers are not required to give you time to meet the call. While they usually offer a grace period, in a fast-crashing market, they can liquidate positions immediately to protect the firm's capital.
Real-World Example: House Call Calculation
You buy $20,000 worth of Stock XYZ using $10,000 of your own cash and borrowing $10,000 from the broker. Your equity is 50%. The broker has a "house" maintenance requirement of 35%.
FAQs
A Fed call (Reg T) is for the initial purchase (50%). A maintenance call is based on FINRA's minimum (25%). A house call is based on the brokerage's own higher requirement (e.g., 30-40%).
Yes. If you are in a margin call (including a house call), the broker has the right to liquidate your assets immediately to cover the risk. They are not legally required to notify you first.
Brokers use house calls to protect themselves. If a client's account goes to zero or negative, the broker is on the hook for the loss. Higher requirements provide a buffer against this risk.
No. House requirements vary by firm. Some discount brokers may have stricter rules to automate risk management, while full-service brokers might be more flexible.
It varies, but usually 1-3 days. However, in volatile markets, the broker may demand immediate payment or liquidate instantly.
The Bottom Line
A house call is a critical risk management tool for brokerage firms and a vital warning sign for traders. It represents the "safety cushion" a broker maintains above the regulatory minimums. Understanding that your broker can—and will—enforce stricter rules than the government is essential for managing a margin account. Ignoring house requirements or failing to check the specific margin rating of the stocks you trade can lead to forced liquidations and locked-in losses. Always maintain a healthy buffer of excess liquidity in your account to absorb market fluctuations without triggering these internal alarms. While house calls protect the broker from insolvency, they can be devastating for an unprepared trader. Smart margin management means treating the house requirement, not the regulatory minimum, as your true limit.
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Key Takeaways
- A house call is triggered by the brokerage's internal risk rules, not just federal regulations.
- Brokerages have the right to set "house" maintenance requirements higher than the regulatory minimum of 25%.
- Common house requirements are 30% to 35% or higher for volatile stocks.
- Failure to meet a house call can result in the immediate liquidation of assets.
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