Economic and Political Insights

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The Bernstein Doctrine: Five Questions Before We Upend an Economic System
What Colin Powell’s approach to military intervention can teach us about Medicare for All—and major domestic economic reform.
 • David Bernstein
The Student Loan Interest Elimination Act of 2026: A Proposal with Some Very Strange Incentives
Zero interest sounds generous. The incentives are another story.
 • David Bernstein
Testing a Portfolio Reallocation Rule with ChatGPT
Using AI to search for a really high-return low-risk portfolio and allocation rule.
 • David Bernstein
Do Size and Diversification Matter in Drone Stocks?
An August 2026 snapshot finds that larger drone-focused companies—and diversified companies with drone exposure—are trading closer to their 52-week…
 • David Bernstein
A Practical Way to Use AI When Trading a Taxable Portfolio
How to combine investment objectives, taxes, and trade execution
 • David Bernstein
When Similar Funds Produce Different Results
What a Simple Growth-Fund Experiment Says About Diversification Within an Investment Style
 • David Bernstein
Unsolicited Advice for My Friends at AIPAC and the Democratic Majority for Israel (DMFI)
Why pro-Israel organizations need a different strategy for Democratic primaries—and a new political alternative for 2028
 • David Bernstein
The Trump Health-Care Agenda Is Taking Shape
New policies are reshaping Marketplace coverage, prescription-drug prices, Medicaid, rural hospitals, provider payments and prior authorization
 • David Bernstein
The 10% International Diversification Trap
Why a Token International Allocation Did Little to Reduce Risk—and Lowered Returns Over the Past Decade
 • David Bernstein
Emerging-Market Equities and Portfolio Diversification
When Risk Reduction Improves Portfolio Efficiency but Lowers Return
 • David Bernstein
The Letter Behind Melat Kiros’s Political Rise
What her response to October 7 reveals about her politics—and the limits of her vision for Israel and the Palestinians
 • David Bernstein
Does a Rebalancing Band Improve Gold’s Downside Protection?
A 2010–2025 monthly case study using semivariance and downside deviation
 • David Bernstein
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