Global macro

Definition

Global macro trades the biggest objects available — currencies, rates, sovereign credit, commodities, equity indices — on theses about economic regimes and policy: where growth, inflation, and central banks are taking relative prices. Its canon is Soros’s reflexivity (philosophy-reflexivity): markets don’t just reflect fundamentals, they alter them, and macro’s signature trades ride self-reinforcing loops to their breaking points (the 1992 sterling trade — positioning against a policy commitment whose defense was becoming self-defeating — is the style’s defining exhibit).

How it works / structure

• The thesis grammar (engine-relevant): a macro thesis names a REGIME variable (inflation path, policy stance, current-account pressure), the PRICE it should move (ext-fx, ext-bonds-rates, index level), the TRANSMISSION (why this variable forces that price), and the BREAK condition — macro theses are falsifiable by data calendar (event-cpi, event-fomc) more cleanly than most styles.
• The two temperaments: DISCRETIONARY macro (narrative + timing judgment, concentrated expressions — the Soros/Druckenmiller lineage; documented records, unresolvable method attribution) and SYSTEMATIC macro (rule-based regime models across many markets — overlapping the managed-futures record, style-trend-following-school, Fung-Hsieh’s return-structure work).
• Expression discipline (the style’s craft): the same thesis has many expressions differing in carry, convexity, and stop-out risk (short a currency outright vs options vs rates spread) — macro practitioners’ documented edge concentrates in EXPRESSION selection (asymmetric structures for regime breaks) as much as direction.
• The sizing signature: long droughts punctuated by regime windows — the documented macro return shape; sizing swells at genuine dislocations and hibernates otherwise (the discipline risk-scenario-analysis parameterizes).

When it applies

Regime transitions (the style’s entire habitat — tightening cycles, currency-regime stress, inflation turns: episode-rates-shock-2022 was a macro year by construction); policy-constraint trades (positioning against commitments whose defense costs compound); portfolio context (macro overlays as the diversifier whose returns concentrate exactly when equity styles drawdown — the documented crisis-alpha claim, with its mixed evidence labeled).

Risk profile & failure modes

• Narrative without falsifiers (the signature failure): macro stories are infinitely renewable — “eventually” theses with no dated break condition consume years of carry; the platform requires data- calendar falsifiers on every macro thesis.
• Early against policy: central banks control the printing press and the timeline — fighting them WITHOUT the reflexive-break setup is the documented account destroyer (the sterling trade worked because the defense was self-defeating, not because disagreement sufficed).
• Expression mismatch: right regime call, wrong vehicle — carry-negative expressions time out before the thesis pays (ext-fx carry arithmetic).
• Crowded macro consensus: the loudest regime narrative is usually positioned — pain trades run against consensus first (sent-cot-reports positioning checks apply).

Evidence & limits

Soros’s framework is practitioner canon (labeled); Fung-Hsieh documents systematic macro/CTA return structure; discrete legendary records are documented history with unresolvable attribution. The crisis-alpha diversification claim has mixed formal evidence (labeled). The KB carries macro as a thesis grammar with unusually clean falsifiability, not as an evidenced premium.

Falsifiable-thesis examples

Illustrations only, not signals:

• “Currency X breaks its policy band within 2 quarters as reserve drain accelerates (reflexive-break thesis); reserves stabilizing two consecutive months falsifies” — graded on the published reserve data.
• “Long 2s10s steepener pays within 3 FOMC meetings as the cutting cycle begins (transmission thesis); a hike or hold-with-hawkish-dots falsifies” — graded on the policy calendar.

Cross-references

• The philosophy: philosophy-reflexivity; the lens: lens-macro
• The instruments: ext-fx, ext-bonds-rates, instrument-futures-contract
• The systematic sibling: style-trend-following-school
• The regime library: regime-rate-environments, episode-rates-shock-2022