Understanding the Numbers on a 150K Prop Account

A prop account is a funded trading account from a firm like Apex, where you trade their capital under defined risk rules. You pay an evaluation fee, pass a challenge, and if funded, you keep a portion of what you earn. The account balance - $150,000 in this case - sets your position sizing ceiling. What it does not set is your actual risk.

The account says $150,000. That number is real in the sense that it sets your contract limits. On an Apex 150K EOD, that ceiling is currently 12 NQ contracts. (Limits and rules change; verify the current spec with Apex before sizing.) But it is not the number that governs your risk. The number that governs your risk is $4,000.

That is the EOD trailing drawdown. It is what you can lose, total, before the account is gone. Not $150,000. Four thousand dollars.

This took me longer than it should have to fully internalize. The $150K is a position sizing ceiling. The $4,000 is your actual stake, once funded. (The eval fee is its own risk bucket, covered below.) When you understand that, everything about how you should size and protect the account changes.

How the trail actually works

A trailing drawdown is the maximum you can lose from your highest watermark, calculated at end of day. It trails your highest end-of-day equity balance, not intraday highs. If you close at +$1,000 today, your floor rises permanently. If you spike intraday and give it back before close, your floor does not move.

This matters: from a floor mechanics standpoint, closing green by even a small amount is better than scratching back to flat. The trail locks in at end of day only. That said - never use this as a reason to force trades in the final 30 minutes of a session. Chasing a green close is one of the more reliable ways to turn a manageable day into a damaging one.

Starting from $150,000:

The warning and danger zones are my own conventions, not Apex thresholds. They exist to create distance between how I actually trade and the hard limit where the account disappears.

The math on your actual runway

With a $4,000 EOD trail and a $2,000 daily loss limit - hitting the daily limit terminates the account immediately, same as the trail - you have exactly two max-loss days before it is over.

That is not a runway. That is a ledge.

This is why the personal stop lives at -$500, not at Apex’s limit. The $500 stop is the fence you put up well before the edge. Once that fence is hit, the session is done. There is nothing to recover, nothing to make back. The market will be there tomorrow.

Sizing against what you actually have

During the evaluation phase, risk per trade is set at roughly 20% of the daily loss limit - about $400 per trade. A working configuration for this phase:

This is how I size - not a sizing prescription for anyone else.

Once funded, that drops to 10% - around $200 per trade. The goal shifts to protecting the floor. Smaller risk per trade also means sizing must respond dynamically to where you sit relative to the trail. If you are $1,800 below your peak, your sizing logic needs to tighten regardless of what a fixed percentage rule says. The rules are a starting point, not a ceiling.

One more thing worth knowing before getting here: the evaluation fee is real capital at risk too. Failed evals cost money. The “$4,000 is your actual stake” framing only holds once you are funded. Factor the eval cost into your total risk picture before signing up.

What the number actually is

The $150,000 is not your money at risk. The $4,000 is.

The number is four thousand. Trade like it.

Companion: Apex 150K EOD Trail Strategy Guide covers the tactical side: payout ladder, sizing math, multi-account scaling.

This reflects my own framework on an Apex 150K EOD account. Not financial advice. I use Apex and may earn a referral fee if you sign up through my link.

Last verified: April 2026.