Asset Allocation Bi-Weekly – The Impact of New Equity Supply

• After the Great Financial Crisis, cumulative stock buybacks showed strong correlation with S&P 500 price increases, with market stalls occurring when buyback activity slowed
• The SEC's 1982 Rule 10b-18 established safe harbor provisions for buybacks, including limits of 25% of average daily trading volume and restrictions on price and timing
• Analysts recommend diversifying into neglected equity areas such as value and international stocks as protection against projected weakness from rising AI-related equity issuance

Summary: The Impact of New Equity Supply on Markets

Key Historical Context:

In November 1982, the SEC introduced Rule 10b-18, establishing safe harbor requirements for stock buybacks, which transformed them from potential market manipulation into a legitimate corporate strategy. The rule requires companies to use a single broker daily, follow timing restrictions, price limitations, and cap daily repurchases at 25% of average daily trading volume.

Main Findings:

Buybacks became the preferred method for rewarding shareholders due to favorable tax treatment. Federal Reserve data shows a strong correlation between accumulated buybacks and S&P 500 performance, particularly post-Great Financial Crisis. When cumulative buybacks slowed, markets typically stalled, highlighting their critical role in supporting stock prices.

Current Market Implications:

The analysis warns of a significant shift: artificial intelligence infrastructure needs are driving increased equity issuance, reversing the buyback trend. Major upcoming IPOs—including SpaceX (recently announced), Anthropic, and OpenAI—will likely accelerate new stock supply in coming quarters.

Investment Outlook:

While not predicting a bear market, the report identifies potential headwinds for equity markets as companies issue more stock to fund AI investments. This increased supply could pressure overall market performance.

Recommendation:

Investors should consider diversifying into currently neglected equity market segments, particularly value stocks and international equities, to protect against projected weakness in mainstream equity markets.

Bottom Line:

The structural shift from stock buybacks (demand) to new equity issuance (supply) represents a meaningful change in market dynamics that could constrain U.S. equity performance in the near term, warranting portfolio repositioning strategies.