It simply is the result of everyone’s current bid. It isn’t worth much because it can’t account for individuals’ bids changing between now and the closing date.
It is generally 2 or 3 bids showing projected results before the bid actually closes, and the mock bid projections are usually wildly inaccurate compared to the official bid results. Thereby “mocking” you when the bid is posted 😜
Bid 21-101 in Jan'21 (88 CAs), the first mock had junior CA at 1840 and the award was 1777.
Bid 20-101 in Jul'20 (16 CAs), first mock had junior CA at 1821 and the award was 1547.
Bid 19-102 in Nov'19 (127 CAs), first mock had junior CA at 2102 and the award was 2122.
Bid 19-101 in Jun'19 (70 CAs), first mock had junior CA at 2073 and the award was 2029.