Wall Street darlings Twitter and Tesla hit with some hard truth, and Estee Lauder is made over, all in Wednesday's analysts' actions. Twitter was downgraded to HOLD from BUY at Pivotal Research. The firm said a 47% rise in share prices over the past three months makes it overvalued. Tesla was hit with a two-notch downgrade to UNDERPERFORM at CLSA. Analysts said lower Model X margins give stock little upside this year. Estee Lauder was upgraded to OVERWEIGHT from NEUTRAL at Piper Jaffray with a $100 price target. The firm said the company can deliver superior returns over the next several quarters.