PharmChem (PCHM, $3.2) was one of the top gainers this week, climbing to $3.2 per share. A.I.dvisor analyzed 396 stocks in the Medical Specialties Industry over the last week and discovered that of them (6) trended up while of them (3) trended down. A.I.dvisor found 246 similar cases when PCHM's price jumped over within one week. In out of those 246 cases, PCHM's price went down during the following month. Based on these historical data, A.I. thinks the odds of an Uptrend reversal for PCHM are