Analyst Update: athenahealth, Inc, Insys Therapeutics Inc, and Diana Shipping Inc.

Analysts are weighing in on healthcare issue athenahealth, Inc (NASDAQ:ATHN), pharmaceutical stock Insys Therapeutics Inc (NASDAQ:INSY), and transportation concern Diana Shipping Inc. (NYSE:DSX). Here's a quick roundup of today's brokerage notes on ATHN, INSY, and DSX.

• ATHN is up 2.8% at $129.51, after receiving an upgrade to "buy" at Evercore ISI, which also raised its price target on the stock to $152 -- in territory the shares haven't seen since January. While the stock has been rallying in recent weeks, today's pop is being contained by the $130 level and the 200-day moving average, which have both limited athenahealth, Inc's upward motion numerous time since June. The equity is currently sitting on a nearly 20% year-to-date loss, and short sellers have been betting on further downside. Specifically, over 23% of ATHN's available float is sold short, representing nearly five weeks' worth of trading, at the stock's average daily volumes.

• INSY is 3.3% higher at $12.69, despite a price-target cut at Jefferies to $18 from $22 -- still representing a 42% premium over current levels. Even with today's gains, the stock is off 55.7% year-to-date, and is not far from its late-June two-year low of $11.45. The brokerage bunch has largely remained in Insys Therapeutics Inc's bullish corner, in spite of the stock's uninspiring technical performance of late. Three out of four analysts covering the shares maintain a "strong buy" rating, without a "sell" opinion in sight. Plus, the average 12-month price target on Insys Therapeutics Inc sits well overhead, at $23.40.

• Pareto Securities cut its rating on DSX to "sell" from "hold," sending the shares sliding 5.1% to $2.62. Diana Shipping Inc. has had a dismal year so far, stuck in a choppy sideways pattern between its record low just south of $2, seen in February, and overhead resistance in the $3-$3.50 region. Year-over-year, the shares are down nearly 63%, as well. Meanwhile, short interest on the stock has been falling, with bears potentially collecting profits. Yet, the remaining 3.2 million DSX shares wrapped up in short interest would take over six sessions to cover, at the stock's typical pace of trading.