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Greylock Partners
David Sze · Venture Capital · Venture
Greylock Partners is a premier venture capital firm founded in 1965 by Bill Elfers and Dan Gregory. Originally based in Cambridge, Massachusetts, the firm relocated its headquarters to Silicon Valley in 2009. As one of the oldest venture capital institutions, Greylock specializes in early-stage investments, typically engaging as the first institutional partner for startups in sectors such as artificial intelligence, enterprise software, consumer internet, and fintech. The firm is renowned for backing generation-defining companies like LinkedIn, Facebook, Airbnb, Workday, and Palo Alto Networks, leveraging its deep industry expertise to help founders scale their visions into market-leading icons.
Simulated Performance
| Metric | Value |
|---|---|
| Total return | -50.5% |
| YTD return | -34.5% |
| Sharpe ratio | -4.28 |
| Win rate | 57% |
| AUM | $1.2B |
| Inception | Oct 1, 2025 |
| Updated | Sep 21, 2026 |
Institution Status
| Field | Value |
|---|---|
| AUM | $1.2B |
| Turnover | Low (<15%) |
| Avg holding | 18 Months |
| Inception | Oct 1, 2025 |
| Website | https://greylock.com |
Current Holdings
Updated on Sep 21, 2026.
| Ticker | Name | Portfolio % | Return |
|---|---|---|---|
| FIG | Figma, Inc. | 88.9% | -53.6% |
| NXDR | NXDR | 6.7% | +17.1% |
| RBRK | Rubrik, Inc. | 3.1% | +27.9% |
| BLND | Blend Labs Inc | 1.2% | -21.3% |
Recent activity
| Date | Action | Ticker | Weight |
|---|---|---|---|
| Aug 24, 2026 | BUY | NXDR | 5.0% → 6.7% |
| Aug 24, 2026 | BUY | RBRK | 2.1% → 3.1% |
| Aug 24, 2026 | BUY | FIG | 83.5% → 88.9% |
| Aug 24, 2026 | BUY | BLND | 1.2% → 1.2% |
| Aug 24, 2026 | SELL | VIA | 8.1% → 0.0% |
Investment Style Analysis
Greylock Partners is widely recognized for employing a Venture strategy. As of Sep 21, 2026, the firm oversees approximately $1.2B in assets under management (AUM). The portfolio demonstrates a clear preference for the Software - Application and Internet Content & Information sectors, reflecting a high-conviction approach to capital allocation.
Recent Market Moves
During the latest rebalancing period ending Aug 24, Greylock Partners made a significant move by increasing exposure to NXDR. This adjustment aligns with the fund's dynamic approach to risk management and capital deployment in current market conditions.
Investment Philosophy
Greylock’s investment philosophy centers on being the "first partner" to extraordinary founders, often providing the initial seed or Series A capital. The firm operates with a core value of collegiality, emphasizing a collaborative partnership over a hierarchical structure. Beyond capital, Greylock offers extensive operational support through its dedicated talent, marketing, and customer development teams. Their strategy is focused on identifying and nurturing "AI-first" and software-driven businesses that have the potential to disrupt established markets or create entirely new categories, ensuring long-term institutional growth for their portfolio companies.
Disclaimer
The content provided on this page, including the simulated portfolio performance, holdings analysis, and AI-generated insights, is for informational and educational purposes only. It does not constitute financial advice, investment recommendations, or an offer to buy or sell any securities. All data is derived from historical SEC 13F filings and other public disclosures, which have a reporting lag. The "Simulated Performance" is a hypothetical reconstruction based on past disclosures and does not represent the actual returns of the institution. Past performance is not indicative of future results. Tritonix.ai is not affiliated with Greylock Partners.
Similar Investment Style
Based on Venture.
- Accel Partners — Jim Swartz · 3M +25.5%
- Deer Management Co. LLC — Robert P. Goodman · 3M -8.1%
- New Enterprise Associates, Inc. — Scott Sandell · 3M +2.6%
- Nextech Invest Ltd. — Alfred Scheidegger · 3M +4.4%
Frequently asked questions
How is the simulated portfolio for Greylock Partners constructed?
This simulation is powered by Tritonix AI using official SEC filings. We focus on the "Best Ideas" by filtering for only the Top 20 largest holdings and rebalancing them to 100%. The simulation tracks performance starting from Oct 1, 2025. Our AI monitors for updates every Monday to capture major shifts. This concentrated approach highlights the manager's true stock-picking skill and mirrors their actual investment returns.
What is Greylock Partners's largest holding?
As of the latest filing, Greylock Partners's top position is Figma, Inc. (FIG), representing 88.9% of the portfolio. This reflects a high-conviction bet by the institution.
What is Greylock Partners's historical performance and risk profile?
Our simulation indicates a total return of -50.5% with a win rate of 57%. Notably, the portfolio maintains a Sharpe Ratio of -4.28, suggesting an standard level of risk-adjusted returns compared to the broader market.
What sectors does Greylock Partners primarily invest in?
Greylock Partners has a strong preference for the Software - Application sector, which makes up 90.1% of their disclosed assets. The portfolio also has exposure to Internet Content & Information, indicating a specific thematic focus.
Is Greylock Partners's portfolio concentrated or diversified?
Greylock Partners runs a highly concentrated portfolio with 4 disclosed positions. The top 3 holdings alone account for 98.8% of the total portfolio weight, suggesting a strategy that favors deep research into a few key names.
How has Greylock Partners performed in 2026?
Our AI-simulated model portfolio for Greylock Partners tracks a Year-to-Date (YTD) return of -34.5%. This metric helps investors gauge the institution's effectiveness in the current market environment.
Does David Sze manage Greylock Partners directly?
Yes, David Sze serves as the key portfolio manager for Greylock Partners, overseeing the investment strategy and final capital allocation decisions.