Renaissance Technologies Q1 2026: A Quant Book's Breadth

Renaissance Technologies, the quantitative fund founded by Jim Simons, disclosed a reported 13F value of $63.93B for the quarter ended March 31, 2026 (Form 13F-HR, accession 0001037389-26-000033, filed 2026-05-14). But the headline number is the least interesting thing in the filing. What defines a Renaissance 13F is its extraordinary breadth: the ten largest positions account for only about 14% of the disclosed equity book, with roughly 86% spread across a vast long tail of names. This is the statistical opposite of a conviction portfolio.

That structure is the point. Renaissance is a model-driven quant shop, and its holdings reflect the output of statistical signals across thousands of securities rather than a manager's view on any single company. So while the quarter shows eye-catching individual moves — Nvidia share count up roughly 190%, new positions in Apple and Verisign, and trims to Palantir and Micron — these are best read as signal rebalancing, not as bets a human analyst placed with conviction.

For 13F readers, the right lesson from Renaissance is structural: it is a reminder of what a genuinely diversified, systematic book looks like, and a caution against over-reading any one line.

A book with almost no concentration

The largest position is United Therapeutics (UTHR) at just 2.11% of the book, followed by Palantir (PLTR) at 2.04%, a new Apple (AAPL) position at 1.55%, gold miner Kinross Gold (KGC) at 1.55%, and Micron (MU) at 1.46%. No single name reaches even 2.2%.

Compare that to a high-conviction manager that might place 10% or more in one stock, and the contrast is stark. With roughly 86% of the book outside the top ten, Renaissance's portfolio is a wide net of small, statistically selected positions — exactly what you would expect from a fund that trades on patterns across an enormous universe of securities.

The quarter's signal-driven moves

Even within a quant book, the largest position changes are worth noting for what they reveal about the model's current tilts. The standout was Nvidia (NVDA), where Renaissance lifted its share count by about 190%, and two new entries: Apple and Verisign (VRSN). On the reduction side, the firm trimmed Palantir by 21%, Micron by 28%, and Sandisk (SNDK) by 34%, while shaving gold royalty name Franco-Nevada (FNV) by 10%.

The pattern — adding to Nvidia and Apple while cutting some semiconductor and momentum names — is a rebalancing, not a thesis. In a statistical strategy, a 190% increase in one name and a 34% cut in another are the model reweighting exposures as signals shift, and they can reverse just as quickly the following quarter.

Why the reported value and holdings differ

It is worth flagging that Renaissance's reported 13F total and the sum of its disclosed top positions do not line up neatly — a consequence of a book so broad that the bulk of its value sits in a long tail of smaller holdings rather than in the names at the top. That is why this analysis leans on the reported 13F value as the headline figure and treats the position-level detail as directional rather than precise.

What it means for 13F readers

Renaissance is the clearest example in large-cap 13F data of a systematic, diversified book. The useful takeaways are not stock tips but structure: extreme diversification, model-driven turnover, and position changes that signal reweighting rather than conviction. Read it as a benchmark for what quant breadth looks like. Track the firm's quarter-over-quarter holdings on the Renaissance Technologies filer page.

FAQ

What is Renaissance Technologies?

Renaissance Technologies is the quantitative hedge fund founded by Jim Simons. It disclosed a reported 13F value of $63.93B for the quarter ended March 31, 2026, across an extremely diversified book.

How diversified is Renaissance Technologies' portfolio?

Highly. Its ten largest positions account for only about 14% of the disclosed equity book, with roughly 86% spread across a long tail of smaller holdings — the signature of a systematic quant strategy.

What were Renaissance's biggest moves in Q1 2026?

Renaissance raised Nvidia by about 190% in share terms, opened new positions in Apple and Verisign, and trimmed Palantir (-21%), Micron (-28%), and Sandisk (-34%).

Do Renaissance's 13F changes reflect conviction?

No. As a model-driven quant fund, its position changes reflect statistical signal rebalancing across thousands of securities rather than a discretionary view on any single company.