I really don't see what people are having the problem with...but since you've asked
We'll say 1000 AAMRQ shares to start Dec avg value of $26, Jan $27, Feb $28, Mar $29. just for an example
For the equation I'll use ((AAL * 1.58)-23)/AAL) * #AAMRQ Is it accurate? No, it's just an estimate. Strictly an approximation. The real equation is slightly altered. ...but I don't care.
This is what you'd get/ Have
Dec. 9 66.5 AAL 933.5 AAMRQ (4 x 233.38)
Jan. 9 +162.3 AAL 700.1 AAMRQ
Feb. 9 +169.9 AAL 466.8 AAMRQ
Mar. 9 +177.0 AAL 233.4 AAMRQ
Apr. 9 +183.7 AAL --0--
Total 759.4 Shares AAL