Shares buybacks can have a severely destabilizing impact on longer term companies' valuations, as noted in numerous posts on this blog. In the COVID19 pandemic, legacy shares buybacks are associated with reduced cash reserves cushions and thiner equity floats for the companies that aggressively pursued this share price support strategy in recent years. Hence, logic suggests that companies more aggressively engaging in shares buybacks should exhibit greater downside volatility - de facto acting as de-hedging instrument for risk management.
Here is the evidence:
Note how dramatically poorer S&P500 Shares Buybacks index performance has been compared to the overall S&P500 in recent weeks. Since the start of March 2020, S&P500 Shares Buybacks index average daily performance measured in y/y returns has been -15.04%, against the S&P500 index overall performance of -0.89%. Cumulatively, at the end of this week, S&P500 Shares Buybacks index total return is down 10.18 percent against S&P500 total return of -0.967 percent.
While in good times companies have strong incentives to redistribute their returns to shareholders either through dividends or through share price supports or both, during the bad times having spare cash on balancesheet in the form of retained earnings makes all the difference. Or, as any sane person knows, insurance is a cost during the times of the normal, but a salvation during the times of shocks.