The recent insider purchase at Avient is seen as a positive sign. The long-term insider transactions and notable insider ownership suggest that Avient insiders are well aligned with common shareholders and may believe the share price is too low.

Despite Avient's weaker revenue growth outlook versus the industry, its current P/S ratio is typical, implying investors may overlook limited growth potential. The ongoing share prices might be difficult to sustain as poor revenue growth could potentially dent investor sentiment and lead to a drop in share price.

Given the substantial insider selling and lack of recent purchases, careful consideration is suggested before buying Avient's stock. Although insider holdings suggest some alignment with other shareholders, the extent of insider ownership is not high compared to other companies.