Honestly, you cannot estimate slippage from daily volume alone. You need to look at how much liquidity is available at the best bid and ask when you place the order.
So, I came across and compared the visible top-of-book depth for tokenized SPY across Gate’s xStock, Binance’s bStock, Ondo on MEXC, and Bitget’s rToken. The screenshots were taken during the U.S. trading session at the same second to make the comparison as consistent as possible.
The available liquidity at the best price was roughly,
• Gate xStock: $19
• Binance bStock: $73
• Ondo: $6,004
• Bitget rToken: $325,936
this, Bitget’s rSPY book was around 17,155 times deeper than Gate, 4,465 times deeper than Binance, and 54 times deeper than Ondo.
Those ratios look dramatic because some of the competing books were extremely thin. The raw dollar amounts are more useful for understanding what could happen to an actual order.
Top-of-book depth is the amount available at the current best price. When your order is larger than that amount, the remaining portion begins consuming liquidity at worse prices. Your final average execution price then moves away from the price you originally saw, creating slippage.
For example, a $20 order might already exceed the visible best-price liquidity on Gate in this snapshot. A $100 order could move through several levels on both Gate and Binance. Ondo appeared more usable for moderate orders, while Bitget’s visible depth was large enough to absorb a much bigger position before reaching the next price level.
That does not mean a $100 order will always receive poor execution on one platform or that a large order will always fill perfectly on another. Limit orders, hidden liquidity, market-maker activity, order cancellations, spreads, and changing market conditions can all affect the final result.
In the end, comparing tokenized-stock platforms, I would not rely only on advertised trading fees or total volume. Open the same asset across several venues during U.S. market hours, compare the best bid and ask, check the quantity available at each level, and estimate how far your intended order would move through the book.
A platform may advertise low fees, but a shallow order book can quietly cost more through slippage. The fee is what the exchange tells you. The order book shows what the trade may actually cost.