The Bermuda Stock Exchange held steady yesterday, with Butterfield Preferred, Bermuda National and Bermuda Aviation all trading shares, closing at $1,215, $12 and $3.60, respectively, all with no change in share price.Overall, the BSX closed at 1,062.21, trading 10,020 shares worth BD$36,240 and 1,200 US shares worth US$1,458,800.