** Oilfield services firm Liberty Energy LBRT.N shares down 8% to $24.01 i n extended trading after capital raise news

** Denver, Colorado-based firm announces private offering of $500 mln 5-yr convertible bonds

** Co plans to use net offering proceeds to repay debt under credit agreement with J.P. Morgan Chase Bank, and certain other lenders, remainder for general corporate purposes

** It also intends to use portion of proceeds to pay the cost of capped calls, derivative transactions employed to help mitigate potential dilution

** Co has ~162 mln shares outstanding for ~$4.2 bln market cap

** LBRT shares rose 5.8% to notch record high close of $26.09 on Mon. Stock up 41% YTD and has more than doubled over the past six months

** Shares finished up 16% on Thurs after co late Weds posted Q4 core adj profit beat and said entered into power reservation project with another leading data center developer for expansion in Texas, amid a surge in crude prices over concerns of a US attack on Iran

** 8 of 12 analysts rate the stock "strong buy" or "buy", rest "hold"; median PT $23, per LSEG data

(Lance Tupper is a Reuters market analyst. The views expressed are his own)

((lance.tupper@tr.com 1-646-279-6380))