1.6 Settlement and Clearing

Understand what actually happens after your trade fills, why "settlement" matters, and rules like Good Faith Violations that can restrict your trading.

Layer 1: Market Plumbing — Chapter 6 Goal: Understand what actually happens after your trade fills, why "settlement" matters, and rules like Good Faith Violations that can restrict your trading.

The Core Idea

When you "buy" a stock, you don't actually own it immediately. There's a behind-the-scenes process called clearing and settlement that finalizes the transfer of shares and cash. Most of the time you never notice — until it bites you with a violation or restriction.

The Two-Step Process

Step 1: Clearing

The matching and validation of the trade.

Confirms both sides agree
Verifies the buyer has funds and seller has shares
Done by clearing houses (mainly the DTCC in the US)

Step 2: Settlement

The actual transfer of shares from seller to buyer, and cash from buyer to seller.

T+1 Settlement (Current US Standard)

T+1 means: Trade Date + 1 business day.

Since May 2024, the US has been on T+1 settlement. (It used to be T+2 for decades, and T+3 before that.)

What This Looks Like

Day	Event
Monday	You buy 100 shares of AMD (trade date = T)
Tuesday	Settlement — shares transfer to your account, cash leaves (T+1)

For most retail traders using margin accounts, you can:

See the position immediately
Trade in/out same day
Just not withdraw the cash until settlement

The DTCC and Clearing Houses

What is the DTCC?

The Depository Trust and Clearing Corporation — the central clearing house for US securities.

What They Actually Do

Stand between buyer and seller
Guarantee the trade even if one side defaults
Net out millions of trades to minimize cash/share movements
Hold most US securities in "street name" (more on this in a moment)

Why This Matters

The DTCC is the reason the market doesn't blow up when a broker fails. They're the counterparty of last resort.

Counterparty Risk

Before central clearing, if your trade partner defaulted, you might not get your shares. The clearing house eliminates this for you.

Street Name vs. Direct Registration

Street Name (Default)

Your broker holds shares in their name, on your behalf. The DTCC holds the actual record.

Pros: Fast, cheap, easy to trade
Cons: You don't technically own the shares directly; broker insolvency could be messy (though SIPC insurance protects you)

This is how 99%+ of retail accounts work. It's fine.

Direct Registration System (DRS)

Shares registered directly in your name with the company's transfer agent.

Pros: You truly own the shares; immune to broker bankruptcy
Cons: Slow to sell (days), can't be traded normally, paperwork-heavy

You only encounter this for special situations (DRIP programs, certain activists who want direct ownership).

Cash Account vs. Margin Account

This distinction matters a LOT for what rules apply to you.

Cash Account

You can only trade with settled funds
No borrowing
No short selling
No options writing
Restricted by Good Faith Violations (see below)

Margin Account

Can borrow against your equity
Can short sell
Can write options
Day trading is only allowed in margin accounts (and triggers PDT rules)
Default for most active traders

Why It Matters for You

If you currently have a cash account with $9K and you're swing trading, you can get hit with Good Faith Violations. Let me explain.

Good Faith Violations (Cash Accounts)

This is the trap most beginners don't see coming.

The Rule

In a cash account, you must pay for a purchase with settled funds. If you sell a stock and immediately use the unsettled proceeds to buy another stock, then sell THAT stock before the first sale settles, you've committed a Good Faith Violation (GFV).

Example That Trips People Up

Day	Action	Issue
Monday	Sell AAPL for $1,000 (proceeds unsettled until Tuesday)	Fine
Monday	Use that $1,000 to buy AMD	Fine
Monday	Sell AMD for $1,050	GFV! You sold AMD before paying for it with settled funds

Consequences

3 GFVs in 12 months → your account is restricted to settled-cash-only trading for 90 days
That means you can only use cash that's already settled — kills active trading

How to Avoid It

Use a margin account (eliminates GFVs entirely — different rules apply)
Wait for settlement before reusing proceeds (T+1 now, so just one day)
Don't sell positions you bought with unsettled funds until those funds settle

For swing trading with $9K, definitely have a margin account. GFV restrictions can lock you out of opportunities.

Free-Riding (Cash Accounts)

Closely related to GFV: buying a stock and selling it before you've paid for it.

If you don't have enough settled cash to cover a purchase and you sell the stock before depositing funds, that's free-riding.

Consequences:

90-day restriction to settled-cash trading
Possible account closure

This rarely happens to swing traders with funded accounts but is worth knowing exists.

Buying Power vs. Cash Balance

These are NOT the same thing. People lose money confusing them.

Cash Balance

The actual cash sitting in your account.

Settled Cash

The portion of your cash that's actually available to withdraw or use without restrictions.

Buying Power

What your broker says you can use to buy securities.

Cash account: buying power = settled cash
Margin account: buying power = settled cash + margin loan (typically 2× equity for overnight, 4× for day trading if PDT-eligible)

Practical Example (Margin Account, $9K Account)

Metric	Value
Cash deposited	$9,000
Settled cash	$9,000
Reg T overnight buying power	$18,000 (2×)
Day trading buying power	$36,000 (4×, ONLY IF you're PDT-eligible with $25K+)

Critical: Just because you have buying power doesn't mean you should use it. Using leverage on the way down accelerates blowups. (More on this in 1.9.)

SIPC Insurance

What happens if your broker goes bankrupt?

SIPC (Securities Investor Protection Corporation)

Government-backed insurance for brokerage accounts
Covers up to $500,000 per customer ($250,000 cash)
NOT FDIC — it protects against broker failure, not market losses
Most major brokers also carry supplemental private insurance (often into the millions)

What SIPC Does NOT Cover

Market losses (you lost $1K trading? Tough.)
Cryptocurrency
Commodities/futures
Bad investment advice

Practical Impact

Your $9K with any major broker is fully insured against broker failure. Don't lose sleep over this.

Failed Trades and Buy-Ins

Occasionally, trades fail to settle (one side can't deliver). What happens:

Clearing house initiates a buy-in — forces purchase of the missing shares at market
Failed party pays the difference
For retail, this rarely affects you directly — your broker handles it

Exception: If you're short a hard-to-borrow stock and your broker recalls the shares, you get bought in — forced to close your short at market. This can be brutal in a squeeze.

Use a margin account. Even if you don't use margin, it eliminates GFVs and makes life easier.
T+1 settlement means most stuff is invisible for swing traders. Don't overthink it.
Don't confuse cash balance with buying power. Especially in margin accounts.
SIPC covers you. Don't worry about broker bankruptcy for $9K.
For tax purposes, trade date matters, not settlement date.

Quick Self-Check

Before moving to 1.7, you should be able to answer:

What does T+1 settlement mean?
What's the difference between clearing and settlement?
What does the DTCC do?
What's the difference between a cash account and a margin account?
What is a Good Faith Violation and how do you trigger one?
What's the difference between cash balance, settled cash, and buying power?
What does SIPC insurance cover?

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