None because movement of alts are not the same everyday so answer is it depends. An Altcoin may remain on top but if you check the price movement it doesn't move much to say its good for day traders. I always look at the one with the highest volume and observe for about an hour how the price move. I'll check the RSI as well if the coin is already near the level of over bought or over sold. Lastly, I'll check the parabolic indicators if its says its Sell or Buy, then I'll decide if its a good coin to buy for the day or not.