4. 9. Investors brains are so distracted, in denial, they won't get out in time.
5. Recently, however, the buyback boom has started to fade. The Standard & Poor's 500 Buyback Index, which tracks the 100 companies with the largest share repurchase ratio, recently recorded its first quarterly decline since mid 2012. As stock prices reach record highs, the boost from share repurchases diminishes, making it more valuable for companies to invest in longer-term projects or use extra cash for acquisitions.