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Bid
=INDEX(A2:A13,COUNTIF(A2:A13,">"&A15)+1,1)
Ask
=INDEX(A2:A13,COUNTIF(A2:A13,">"&A15),1)

Quote from Quiet1:
Bid
=INDEX(A2:A13,COUNTIF(A2:A13,">"&A15)+1,1)
Ask
=INDEX(A2:A13,COUNTIF(A2:A13,">"&A15),1)
That worked. I didn't enter it correctly. I have never used the INDEX function, so this is a welcome lesson.
I appreciate your help.