After consolidating between Oct '14 - Feb '18, Celgene broke below the lower boundary of support to fall 20% from that level. With markets in general trending higher from that point, CELG has now rallied back to retest the lower boundary, not uncommon behaviour after a breakdown.
However, given the weakness in the materials sector of late and my view that markets will be in defensive mode for the time being, I'm expecting the downtrend to resume here.
The daily chart above shows an inverted triangle, with negative divergence that failed to the downside and price, after retesting was unable to hold back inside the range. Since that August high, lower highs and lows lows (the low only marginally confirmed) have appeared, another suggestion that prices are moving lower again.
Target projection from the topping patter is down at 60. A significant move back inside the pattern, above the 95 level would be reason to reassess.