BlackRock Takes 10% Stake in SiTime, Reinforcing Institutional Confidence

New filing, same confidence

On April 24, 2026, BlackRock filed Amendment No. 6 to its Schedule 13G for SiTime (CUSIP 82982T106), reporting ownership of 2,651,324 shares – exactly 10.1% of the company’s outstanding common stock. The filing, made under Rule 13d‑1(b), confirms BlackRock’s status as a qualified institutional investor and that its holdings are purely passive, with sole voting and dispositive power over the shares.

What the numbers mean

The 10.1% stake places BlackRock among SiTime’s top institutional shareholders, a notable benchmark for a company whose market cap now sits at roughly $15 billion. The stock is trading at $570.26, up 2.54% on the day, outpacing the S&P 500’s 0.79% gain. Over the past week SiTime has posted a 13.2% rise, and its year‑to‑date return stands at a robust 61.5%, pushing the price into the top 5% of its 52‑week range (95% of the high). The Relative Strength Index of 97 suggests the shares are technically overbought, but the institutional backing may temper short‑term volatility.

Why it matters to investors

BlackRock’s passive filing does not signal an intent to influence corporate control, yet the size of the stake is a clear endorsement of SiTime’s growth trajectory in the timing‑chip segment, a niche that has benefited from the broader semiconductor resurgence. For existing shareholders, the filing adds credibility to recent price performance and may attract additional long‑term capital.

Regulatory compliance

The filing includes the required certifications of passivity and the accompanying exhibits – a Power of Attorney (Exhibit 24) and an Item 7 identification (Exhibit 99). No changes to voting arrangements were reported, reinforcing the filing’s routine nature.

Overall, BlackRock’s 10% passive ownership serves as a strong institutional vote of confidence in SiTime’s market positioning and future prospects.