Fidelity funds' manager FMR LLC tweaked higher its Tesla Inc. TSLA, -5.59% holdings to more than 9 million shares of the Silicon Valley car maker, a 5.291% stake, according to a filing Wednesday. That compares with the about 9 million shares it had in November. Fidelity remained among the top 10 largest Tesla institutional shareholders, according to FactSet. The fund manager also upped its Williams Sonoma Inc. stake to more than 6 million shares, and cut its stake on Weight Watchers International Inc. WTW, to about 4.8 million shares, among other changes in its portfolios. T. Rowe Price on Monday lowered its stake on Tesla to 5.2%. Shares of Tesla fell 1.6% in midday trading Wednesday and are down 5.2% in the past 12 months, contrasting with gains of 3.3% for the S&P 500 index SPX, +1.05% in the same period.