Credit & earnings Lab 08

Guidance Drift

Where does optimistic earnings commentary diverge from weakening growth, margins, or guidance revisions?

Saved example run

Generated using bundled data. These values illustrate the diagnostic and are not current market observations.

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Guidance Drift Report: Northstar Semis

Northstar Semis shows high positive-language drift in 2026-Q2 (drift=0.688), making it the quarter most worth analyst review.

Quarter Drift Label Tone Fundamentals
2026-Q2 0.688 high positive-language drift 0.571 -0.804
2026-Q1 0.022 low drift 0.400 0.357
2026-Q3 0.003 low drift 0.000 -0.007

Methodology

Guidance Drift Lab compares earnings-call tone with three simple fundamentals: revenue growth, margin change in basis points, and guidance revision. Positive language paired with deteriorating fundamentals receives a higher drift score.

Analyst note

Optimistic tone conflicts with weak fundamentals; review guidance quality and risk disclosures.

Not investment advice. Use as a research triage tool, not as a trading signal.

The paper trail

Inspect. Reproduce. Extend.

Run this command from the finance-labs repository root to reproduce the bundled example.

Exact command
PYTHONPATH=labs/guidance-drift/src python3 -m guidance_drift_lab analyze labs/guidance-drift/examples/sample_guidance.csv --format markdown

View original captured output
# Guidance Drift Report: Northstar Semis

Northstar Semis shows high positive-language drift in 2026-Q2 (drift=0.688), making it the quarter most worth analyst review.

| Quarter | Drift | Label | Tone | Fundamentals |
| --- | ---: | --- | ---: | ---: |
| 2026-Q2 | 0.688 | high positive-language drift | 0.571 | -0.804 |
| 2026-Q1 | 0.022 | low drift | 0.400 | 0.357 |
| 2026-Q3 | 0.003 | low drift | 0.000 | -0.007 |

## Methodology

Guidance Drift Lab compares earnings-call tone with three simple fundamentals: revenue growth, margin change in basis points, and guidance revision. Positive language paired with deteriorating fundamentals receives a higher drift score.

## Analyst note

Optimistic tone conflicts with weak fundamentals; review guidance quality and risk disclosures.

_Not investment advice. Use as a research triage tool, not as a trading signal._

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