Noticed something recently when i did transactions.

Suppose something is trading at X-Y (X is the bid and Y is the offer).

No trading for the majority of the day, and I decide to buy e.g. 10000 @ Y.

Immediately (right down to the second), algos kick in and thru times&sales, I see multiple sell orders of 100 shares at X right after i bot 10000 @ Y. Let's say 7 orders of 100 sells for illustration.

Originally i thought this is part of algo to create an illusion of selling pressure since the EOD stats will show up as 10000+7*100=10700 @ X.

But if this is so, then why will the algo sell 7 orders of 100 @ X when 1 sell of 100 is enough? i.e. why is volume of 10700 @ X preferable to 10100 @ X?

Anyone with insights into what the algo is really trying to achieve?

Suppose something is trading at X-Y (X is the bid and Y is the offer).

No trading for the majority of the day, and I decide to buy e.g. 10000 @ Y.

Immediately (right down to the second), algos kick in and thru times&sales, I see multiple sell orders of 100 shares at X right after i bot 10000 @ Y. Let's say 7 orders of 100 sells for illustration.

Originally i thought this is part of algo to create an illusion of selling pressure since the EOD stats will show up as 10000+7*100=10700 @ X.

But if this is so, then why will the algo sell 7 orders of 100 @ X when 1 sell of 100 is enough? i.e. why is volume of 10700 @ X preferable to 10100 @ X?

Anyone with insights into what the algo is really trying to achieve?