How Does a Sudden Spike in Mempool Size Affect a Day Trader’s Execution Risk?

A sudden spike in mempool size indicates high network demand, leading to a surge in transaction fees and longer confirmation times. For a day trader, this increases execution risk because their time-sensitive trade (e.g. a liquidation or an arbitrage) may be delayed or fail to confirm quickly.

The trader must pay a significantly higher fee to ensure timely inclusion, which can reduce or eliminate the trade's profit.

How Does a Node’s Mempool Size Limit Influence Its RBF Relay Policy?
How Does Network Congestion Affect Confirmation Time and Double-Spend Risk?
Can Algorithmic Trading Systems Be Designed to Counteract the Effects of Confirmation Bias?
How Does the Mempool Size Fluctuate and What Does It Indicate about Network Congestion?
How Does the Concept of “Last Trading Day” Differ from the “Final Settlement Day”?
What Is the Difference between a Zero-Confirmation and a One-Confirmation Transaction?
How Does a Mempool Relate to the Speed of a Transaction Confirmation?
How Do Different Fee Estimation Algorithms Work to Predict Necessary Transaction Costs?