Quick Answer — TradeDay Position Sizing Strategy — Quick Facts
- • Position limits: Intraday/EOD = 5/10/15 contracts on $50K/$100K/$150K. Static = 1/2/3 contracts on $50K/$100K/$150K.
- • 1 ES = 10 MES (10:1 ratio). The position limit counts contracts, not contract-equivalents — but the risk-per-tick is what matters for sizing.
- • Risk-per-trade target: 3-5% of available drawdown room. On a $50K Intraday TMD ($2,000 drawdown), that's $60-$100 max per trade.
- • Worked example: 1 ES, 5-tick stop = $250 risk = 12.5% of $2,000 drawdown — too aggressive for a 3-5% target.
- • The position-limit max (5 contracts on $50K) and the risk-per-trade target are usually incompatible — if you're sizing to limit, you're over-risking by 4-10x.
Strategy from real funded accounts: I started trading TradeDay in December 2024 with multiple accounts and around $14,000 in cumulative payouts before going inactive. TradeDay's strategy playbook is shaped by two specifics that don't apply to most prop firms: the 30% consistency rule operates only during evaluation (it bumps your profit target rather than failing you), and the trailing drawdown lock-in mechanic means EOD and Intraday TMD freeze once they reach your starting balance. Position sizing for the 5-day minimum is where most evaluations actually lose. Full strategy framework in the TradeDay strategy guide and main review. Verify current rules at the TradeDay Help Center, or sign up at TradeDay with code SAVE30 for 30% off plus no activation fee.
# TradeDay Position Sizing Strategy: Contracts, Micros, and Risk-Per-Trade
TradeDay's position limits look generous on paper. Five contracts on a $50K Intraday or EOD account, ten on a $100K, fifteen on a $150K. The reality is that traders who max out the position size end up sized so aggressively they breach the drawdown on a normal stop-loss day. The 5-contract position limit on a $50K Intraday TMD account isn't a target — it's a ceiling that almost no realistic position-sizing math gets you near.
I started trading TradeDay in December 2024 across multiple account configurations. Around $14,000 in cumulative payouts, currently no active account. The position-sizing playbook below comes from running real accounts through the math — not from reading the marketing page. The single biggest mistake new TradeDay traders make is treating the position limit as a target rather than as a guardrail.
This guide walks the position-sizing math across all nine TradeDay SKUs: position limits per account size, contracts vs micros conversion, risk-per-trade percentage targets, worked examples on each major account configuration, and the multi-product position-limit interaction that catches traders running multi-instrument strategies.
Position Limits by SKU
Every TradeDay account has a hard position-limit cap configured at the platform level. Exceeding it triggers a platform-side block — the order doesn't fill. The full matrix:
| Account size | Drawdown type | Position limit | Notes |
|---|---|---|---|
| $50K | Intraday TMD | 5 contracts | Combined across all instruments |
| $50K | EOD TMD | 5 contracts | Same as Intraday |
| $50K | Static | 1 contract | Tight by design |
| $100K | Intraday TMD | 10 contracts | Combined across all instruments |
| $100K | EOD TMD | 10 contracts | Same as Intraday |
| $100K | Static | 2 contracts | Doubled from $50K Static |
| $150K | Intraday TMD | 15 contracts | Combined across all instruments |
| $150K | EOD TMD | 15 contracts | Same as Intraday |
| $150K | Static | 3 contracts | Tripled from $50K Static |
Three things to note about the structure:
1. Static accounts have radically tighter position limits. A $50K Static at 1 contract is 5x tighter than the $50K Intraday/EOD at 5 contracts, even though both accounts have the same starting balance. The Static SKU is structurally designed for traders who want a fixed dollar floor and tight position constraints — it's not a choice for traders who want to trade larger positions.
2. The limit is total simultaneous open contracts, not per-instrument. If you're long 3 ES on a $50K Intraday TMD account, you can only add 2 more contracts of any product before hitting the 5-contract limit. You can't have 3 ES and 5 NQ open simultaneously on a $50K account, even though each is below the per-instrument count.
3. The limit counts contracts as discrete instruments. 1 ES counts as 1 against the limit. 1 MES (micro E-mini S&P, 1/10 the notional value) also counts as 1 against the limit. You can't argue your 50 MES contracts equal "5 ES contract-equivalents" — you're over the 5-contract limit at MES contract 6.
The full account-by-account pricing and feature matrix is in TradeDay accounts.
Contracts vs Micros: The 10:1 Math
Most TradeDay traders use a combination of standard and micro contracts to manage notional exposure. The conversion ratios:
| Standard | Micro | Ratio | Standard tick value | Micro tick value |
|---|---|---|---|---|
| ES (E-mini S&P 500) | MES (Micro E-mini S&P) | 10:1 | $12.50 | $1.25 |
| NQ (E-mini Nasdaq) | MNQ (Micro E-mini Nasdaq) | 10:1 | $5.00 | $0.50 |
| RTY (E-mini Russell 2000) | M2K (Micro E-mini Russell) | 10:1 | $5.00 | $0.50 |
| YM (E-mini Dow) | MYM (Micro E-mini Dow) | 10:1 | $5.00 | $0.50 |
| CL (Crude Oil) | MCL (Micro Crude) | 10:1 | $10.00 | $1.00 |
| GC (Gold) | MGC (Micro Gold) | 10:1 | $10.00 | $1.00 |
The 10:1 ratio means trading 10 micros is structurally identical in notional value to trading 1 mini — same dollar risk per tick, same dollar P&L on a winning move. But against the position limit, the 10 micros count as 10 contracts and the 1 mini counts as 1 contract.
The implication for position sizing on smaller accounts: micros let you trade fractional notional exposure but don't help you stay under the position-limit count. On a $50K Intraday TMD with a 5-contract limit, you can trade up to 5 ES (huge notional, $312.50 per 5-tick stop) or up to 5 MES (small notional, $31.25 per 5-tick stop) — but not 6 of either.
The strategic use of micros isn't to "fit more positions under the limit." It's to trade fractional notional exposure at risk-per-trade levels that match the small drawdown distance on $50K accounts.
Risk-Per-Trade Math: The 3-5% Target
The conservative target most experienced TradeDay traders converge on is 3-5% per-trade risk relative to available drawdown room. The math:
Risk-per-trade = (entry price - stop-loss price) × tick value × number of contracts
Available drawdown room = current account balance - drawdown floor. On Intraday and EOD TMD accounts before trail lock-in, the floor follows your highest balance. After trail lock-in (when the trail reaches starting balance), the floor is the starting balance. On Static accounts, the floor is fixed.
The percentage target by trader profile:
| Risk-per-trade % | Profile | Implication |
|---|---|---|
| 1-2% | Highly conservative | Tiny positions, maximum survivability through losing streaks |
| 3-5% | Conservative target most experienced traders use | Survives 5-10 consecutive losers |
| 5-7% | Aggressive | Survives 3-5 consecutive losers |
| 7-10% | High-risk | Two consecutive losers materially threaten the drawdown |
| Above 10% | Account-threatening | Single losing day can breach drawdown |
The math on a $50K Intraday TMD with $2,000 of drawdown:
| Risk % | Dollar risk per trade |
|---|---|
| 1% | $20 |
| 2% | $40 |
| 3% | $60 |
| 5% | $100 |
| 7% | $140 |
| 10% | $200 |
| 15% | $300 |
The implication: on a $50K Intraday TMD, a $250 trade risk is 12.5% of drawdown — over the conservative cap. A $100 trade risk is 5% — at the upper limit of the conservative target. A $50 trade risk is 2.5% — squarely in the safe zone.
Most TradeDay traders running 1-tick or 2-tick stops on micros sit at 0.5-1% per trade. Most TradeDay traders running 4-6 tick stops on minis sit at 5-10% per trade — over the conservative target on a $50K, in target on a $100K or $150K.
Worked Examples on Each Account
The math gets clearer with concrete examples on each account size.
$50K Intraday TMD ($2,000 Drawdown)
Position size scenarios with a 5-tick stop:
| Position | Tick risk | Dollar risk | % of drawdown | Verdict |
|---|---|---|---|---|
| 1 MES | 5 × $1.25 | $6.25 | 0.3% | Excessively conservative — micro position |
| 5 MES | 5 × $1.25 × 5 | $31.25 | 1.6% | Conservative — at the position limit |
| 1 ES | 5 × $12.50 | $62.50 | 3.1% | In conservative target |
| 2 ES | 5 × $12.50 × 2 | $125.00 | 6.3% | Aggressive — over conservative target |
| 3 ES | 5 × $12.50 × 3 | $187.50 | 9.4% | High-risk |
| 4 ES | 5 × $12.50 × 4 | $250.00 | 12.5% | Account-threatening |
| 5 ES | 5 × $12.50 × 5 | $312.50 | 15.6% | Account-threatening — at position limit |
The takeaway: on a $50K Intraday TMD, the 5-contract position limit and the 3-5% per-trade target are essentially incompatible at standard contract sizes with a 5-tick stop. Reaching the limit either requires a 1-tick stop (which most strategies can't sustain) or means you're sized at 12-15% per trade, which is account-threatening on a normal cluster of losing trades.
$100K Intraday TMD ($3,000 Drawdown)
| Position | Tick risk | Dollar risk | % of drawdown | Verdict |
|---|---|---|---|---|
| 1 ES | 5 × $12.50 | $62.50 | 2.1% | Conservative |
| 2 ES | 5 × $12.50 × 2 | $125.00 | 4.2% | In target |
| 3 ES | 5 × $12.50 × 3 | $187.50 | 6.3% | At upper limit of conservative |
| 5 ES | 5 × $12.50 × 5 | $312.50 | 10.4% | High-risk |
| 10 ES | 5 × $12.50 × 10 | $625.00 | 20.8% | Account-threatening — at position limit |
On the $100K, 1-2 ES contracts (or 10-20 MES contracts) with a 5-tick stop is the conservative range. Three contracts is at the upper limit. The 10-contract position limit on the $100K is effectively unreachable with conservative sizing.
$150K Intraday TMD ($4,500 Drawdown)
| Position | Tick risk | Dollar risk | % of drawdown | Verdict |
|---|---|---|---|---|
| 1 ES | 5 × $12.50 | $62.50 | 1.4% | Conservative |
| 2 ES | 5 × $12.50 × 2 | $125.00 | 2.8% | Conservative |
| 3 ES | 5 × $12.50 × 3 | $187.50 | 4.2% | In target |
| 5 ES | 5 × $12.50 × 5 | $312.50 | 6.9% | At upper limit of conservative |
| 10 ES | 5 × $12.50 × 10 | $625.00 | 13.9% | High-risk |
| 15 ES | 5 × $12.50 × 15 | $937.50 | 20.8% | Account-threatening — at position limit |
On the $150K, 2-3 ES contracts with a 5-tick stop is the conservative range. The 15-contract position limit is unreachable with conservative sizing.
$50K Static ($500 Drawdown, 1-Contract Limit)
| Position | Tick risk | Dollar risk | % of drawdown | Verdict |
|---|---|---|---|---|
| 1 MES | 5 × $1.25 | $6.25 | 1.3% | Conservative |
| 1 ES | 5 × $12.50 | $62.50 | 12.5% | Account-threatening — at position limit |
The Static $50K is a different beast. The $500 drawdown is so tight that 1 ES contract with a 5-tick stop already exceeds the conservative target. Most Static $50K traders use micros — the 1-contract limit means 1 MES rather than 1 ES, with stop distances calibrated to keep dollar risk below $25 per trade.
The full SKU-by-SKU sizing matrix with examples for each drawdown variant is in TradeDay's funded account rules guide.
Position Sizing During Evaluation vs Funded Live
The position-sizing math is identical at every stage of the TradeDay account lifecycle — the available drawdown room is what changes.
Evaluation: Drawdown room is the original starting distance ($2,000 / $3,000 / $4,500 on Intraday and EOD TMD; $500 / $750 / $1,000 on Static), minus any drawdown you've already absorbed. As your highest balance climbs, the trail follows on Intraday and EOD TMD, so the distance between your current balance and the trail line stays approximately constant — meaning your safe per-trade dollar risk also stays approximately constant.
Funded Sim: Same drawdown structure as evaluation. If you locked the trail at the starting-balance line during evaluation, the trail stays locked on Funded Sim — meaning your drawdown room from any future high-water-mark balance is starting balance + cumulative profit accumulated. As you build a cushion above starting balance, your effective drawdown room grows (because the floor is fixed at starting balance and your balance is climbing). Position sizing can scale up modestly as the cushion builds.
Funded Live: The drawdown resets to zero on graduation. Your trail starts back at the original starting distance ($2,000 below starting balance on $50K Intraday TMD, etc.). The cushion you'd built on Funded Sim doesn't carry across. Position sizing on Funded Live should reset to the same conservative levels as fresh evaluation, not the elevated levels you may have grown into on Funded Sim.
The strategic implication: position size scales with drawdown room, not with account balance. A $50,500 funded balance and a $52,500 funded balance on a $50K Intraday TMD both have $2,000 of drawdown room (from the locked trail at $50,000) and should size identically. The temptation to size up because the dollar balance is bigger isn't supported by the underlying drawdown math.
The full breakdown of how withdrawals interact with the trail and the available drawdown room is in TradeDay withdrawals and drawdown impact.
Multi-Product Position Management
The 5-contract / 10-contract / 15-contract limits apply across all simultaneously open positions, not per-product. The implications:
Cross-product hedges count against the limit. Long 3 ES + short 3 NQ on a $50K Intraday TMD account is 6 total contracts — 1 over the limit. The platform blocks the 6th contract.
Multi-instrument scalping needs careful position management. A trader running ES and NQ scalping setups simultaneously on a $50K account has 5 contracts to allocate across both. If you're already 3 ES, you can only add 2 NQ before hitting the limit.
Inter-instrument position-limit math doesn't apply. TradeDay doesn't grant additional position-limit slack for hedged or correlated positions. Your 5-contract limit is 5 contracts of any combination of permitted products.
Hedging across your own accounts is forbidden. This is separate from the position-limit math but related. Going long 5 ES on Account A and short 5 ES on Account B is forbidden under TradeDay's no-hedging rule and triggers offboarding plus profit forfeiture, even though each account is at its position limit individually.
The full multi-account hedging policy is in TradeDay rules and TradeDay accounts.
Position Sizing for New TradeDay Traders
The single best position-sizing default for new TradeDay traders: 1 contract or 1-2 micros with the smallest reasonable stop your strategy supports.
On a $50K Intraday TMD with $2,000 of drawdown:
- 1 MES with a 5-tick stop: $6.25 risk = 0.3% of drawdown. Excessively conservative for most strategies but a good way to learn the platform mechanics.
- 2 MES with a 5-tick stop: $12.50 risk = 0.6% of drawdown. Still conservative.
- 5 MES with a 5-tick stop: $31.25 risk = 1.6% of drawdown. At the position limit, in conservative range.
- 1 ES with a 5-tick stop: $62.50 risk = 3.1% of drawdown. In conservative target.
The progression most experienced traders recommend: start at micros, prove out the strategy across the 5-day evaluation minimum, scale to mini contracts only after consistent profitability across multiple sessions. Skipping the micro-scale phase and starting at mini contracts on a $50K account is the single most common reason new TradeDay traders breach the drawdown in their first week.
The 30% consistency rule applies during evaluation only and adds another layer to position sizing — taking a $1,500 single-day winner on a $3,000 evaluation target ratchets your required total to $5,000, even though the win itself doesn't fail the evaluation. Position sizing that targets smaller more-frequent wins (rather than occasional outsized days) interacts better with the consistency rule. The full consistency-rule mechanics are in TradeDay rules.
What to Avoid: The Position-Sizing Mistakes That Breach Drawdowns
Three patterns recur in TradeDay traders who breach the drawdown on position-sizing alone:
1. Sizing to the position limit. Maxing out at 5 ES on a $50K Intraday TMD with a 5-tick stop is $312.50 per trade — 15.6% of drawdown. A normal cluster of 2-3 losing trades breaches. Almost no realistic strategy survives at that risk-per-trade level for the 5-day minimum, let alone past funding.
2. Adding to losing positions. Pyramiding into a moving-against-you position increases position size at exactly the moment the stop has gotten wider. A 1-contract ES position with a 5-tick stop ($62.50) becomes a 3-contract average position with an 8-tick effective stop ($300) after two adds — a 4.8x increase in dollar risk on what was supposed to be a 3.1% trade.
3. Sizing up after wins. A trader who wins on 1 contract decides the strategy works, scales to 3 contracts on the next trade. The next trade is a normal stop-out — but at 3x the position size, the dollar loss is 3x what the winning trades made. Position size should scale with available drawdown room and demonstrated edge across many trades, not with the previous trade's outcome.
All three are about discipline rather than rules — TradeDay's structure permits all three, and traders who don't manage their own sizing will breach the drawdown long before any platform rule fires.
The bottom line
TradeDay's position-limit structure (5/10/15 contracts on Intraday and EOD; 1/2/3 on Static) looks generous on paper but functions as a guardrail rather than a target. The conservative 3-5% per-trade risk target most experienced traders use generally caps you well below the position limit on every account size — usually 1-2 contracts on the $50K Intraday TMD, 2-3 on the $100K, 3-5 on the $150K. The Static SKUs are tight by design and force micro-scale sizing on the $50K and $100K configurations.
The micros are a sizing-granularity tool, not a position-count exploit. The 10:1 ratio between standard and micro contracts means 10 MES is structurally identical in notional exposure to 1 ES — but counts as 10 contracts against the position limit. Use micros to scale notional below 1 mini, not to fit more positions under the limit.
For the rules framing the whole position-sizing context, head to TradeDay rules. For the account-by-account drawdown structure, TradeDay's maximum drawdown rule guide. For how withdrawals interact with the available drawdown room and your sizing, TradeDay withdrawals and drawdown impact. And for the post-evaluation playbook that ties position sizing into the buffer-clearing math, TradeDay funded payout strategy.