someone is lighting a fire under zfx at the start of the...

someone is lighting a fire under zfx at the start of the day

yesterday, for the first 45 minutes of trading someone had a single bid of 172,000 shares always 20 points below current market price. someone else (same group?), at the same time, had a single ask of 172,000 shares always 20 points above current market price. this bid and ask were pulled after the first 45 minutes of trading.

today, for the first 20 minutes of trading someone had a single bid of 109,000 shares always 20 points below current market price. someone else (same group?), at the same time, had a single ask of 109,000 shares always 20 points above current market price. this bid and ask were pulled after the first 20 minutes of trading.

anyonseen this before?