KeyTech Ltd was the biggest mover on the Bermuda Stock Exchange (BSX) last week.The telecoms company traded 1,000 shares to close up 8.9 percent (49 cents) at $5.99.The Ascendant Group Ltd also climbed 5.76 percent (75 cents) to $13.75 with 9,500 shares changing hands.Butterfield bank’s preference shares meanwhile advanced 0.08 percent ($1) to $1,232 as 35 shares were transacted.The bank also traded 2,500 common shares, but its share value held firm at $1.27.BF&M Ltd however slipped 1.66 percent (25 cents) to $14.75 with 3,000 shares transacted.Argus Group Holdings Ltd also fell 0.21 percent (one cent) to $4.55 as 513 shares changed hands.Overall the Index increased 9.82 points (0.87 percent) to 1,117.39 with 16,513 shares worth BD$185,946.75 and 535 shares worth US$47,045 traded.