Berkley W R Corp Q2 2026 Portfolio Activity: Major Purchases & Sales

According to data from Insider Sentinel dated June 30, 2026, Berkley W R Corp (investor_slug: berkley-w-r-corp) managed a portfolio valued at approximately $867 million.

The investor demonstrated significant buying activity this quarter, notably acquiring positions in two companies:

• Taiwan Semiconductor Manufacturing (TSM): Berkley W R Corp purchased all shares held by TSM as of the previous period. This substantial new position represents a potential investment opportunity and can be explored further at TSM.
• Pfizer (PFE): The investor also initiated or significantly increased their stake in Pfizer, jumping from zero shares held previously to a position worth $23.3 million as of June 30.

Conversely, the data shows Berkley W R Corp sold large quantities of other stocks:

• NVIDIA (NVDA): The investor disposed of nearly all shares held by NVDA as of the previous period. This resulted in a nearly 72% reduction in holdings and is reflected in the significant sell category.
• Tesla (TSLA): There was also a substantial sale of Tesla stock, leading to an approximately 63% decrease from prior levels as measured by share changes. This aligns with TSLA being listed among the significant sells.

These major transactions weren't isolated events; Berkley W R Corp made several other notable adjustments:

• Plains All American Pipeline (PAA): The investor increased their holdings of PAA by over one million shares, representing an 18.6% growth in position size.
• BAYVIEW Acquisition Corp (BAYA): A small purchase was noted for this company, increasing its allocation to just under 0.1%.

In addition to these significant changes, the investor also made minor adjustments elsewhere:

• Microsoft (MSFT): Reduced their stake by a small number of shares (-3,200), resulting in only an approximately 2% decrease.
• Amazon (AMZN): Sold around one-quarter of the shares held previously, leading to a roughly 28% reduction.

Berkley W R Corp's portfolio is heavily concentrated in Energy and Technology sectors. The significant buying activity suggests confidence or strategic interest in Taiwan Semiconductor Manufacturing and Pfizer as potential investments for this period. For detailed information on the investor, visit Berkley W R Corp.