Tick Size Pilot Distortion
The Formal Definition
Market anomalies caused by regulatory mandates that widen the minimum quoting and trading increment (tick size) for small-cap equities from $0.01 to $0.05, increasing bid-ask spread costs for retail traders while boosting market-maker trading profits.
Minimum Quoted Spread = $0.05 (Statutory Floor Mandated Above Natural Micro-Penny Equilibrium)
Cole Barrett's Reality Check
The Unvarnished Bottom Line"When the SEC ran the Tick Size Pilot program, they forced small-cap stocks to trade in 5-cent increments instead of whole pennies. Proponents claimed it would encourage research into small companies. In reality, it doubled the bid-ask spread overnight, handing market makers a massive spread toll on every trade at the expense of retail investors."
Interactive Simulator: Test the Math
Real-World Example: Scenario Breakdown
Examining the real numbers for: Trading 10,000 shares of a small-cap equity with a natural market spread of $0.01 vs. a mandated $0.05 tick size
| Execution Metric | Natural Market Spread ($0.01 Penny Tick) | Mandated Tick Size Distortion ($0.05 Pilot Tick) |
|---|---|---|
| Fee / Rate | $1.00 fee | $1.00 fee |
| Spread / Buffer | Quoted Spread: $10.00 Bid / $10.01 Ask ($0.01 spread) | Statutory Floor: $10.00 Bid / $10.05 Ask ($0.05 spread) |
| Execution / Status | Crossing the spread cost $0.01 per share | Forced to cross a 5-cent spread to execute a market order |
| Total Cost / Result | Tight execution costs in an efficient market | Paid an unnecessary $400 markup due to regulatory tick-size restrictions |
How Brokers Weaponize This Term
Market makers lobby for wider minimum tick sizes on small-cap equities under the guise of 'promoting capital formation', knowing that wider spreads expand wholesale trading profit margins.
Broker Evaluation Matrix
Cole Approves
Interactive Brokers: Utilizes smart midpoint pegged orders and alternative lit routing to execute inside wide quoted spreads.
Read Audit →Cole Flags / Avoids
Standard PFOF Portals: Routes small-cap orders to wholesale internalizers that capture the entire wide tick spread on non-directed flow.
View Trap Details →Frequently Asked Questions
What was the SEC Tick Size Pilot Plan?
A two-year test program run by the SEC from 2016 to 2018 that evaluated whether widening tick sizes on small-cap stocks to $0.05 would improve liquidity and research coverage.
Did the Tick Size Pilot succeed?
No. Academic and regulatory post-mortem studies found that the wider tick sizes significantly increased transaction costs for investors and failed to improve trading liquidity.