Aspen Technology $AZPN has been sliding sharply since it almost tagged a high of $120 back in September. The weekly chart below shows us that it has been a free-fall although it finally found support last week around $75 and climbed back a bit this week. Note that price also respected a rising trendline.AZPN Weekly Chart(click to enlarge)Support Holding, but What's the Upside?- For now, it looks like $75-$80 was a critical support area and it held.- If general market sentiment was positive, I would consider going long here around $80. - However, because the market is risk averse, I think the upside will be limited to $90 and at most $100. - If we see price hold under $100, we should anticipate further downside risk.Downside Risk; Key Support:- For me, if price can't push above $100, and falls back to test the $75 support, this support will not be reliable.- I think there is a chance for price to retreat back to $60 area. - The 200-week simple moving average (SMA) is right under $60. - Also a previous critical resistance pivot was around $57, as we can see on the monthly chart below.AZPN Monthly Chart(click to enlarge)