Tommi Johnsen, PhD
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Tommi Johnsen, PhD
Head of Fin dept at DU, crunched #s w/quants, helped money managers sleep (slightly) better. Now writing about markets, models, & messes.
10 posts · theirs
Lately
Does AI Still Read the News Better Than the Market?
The Mechanism Survives, the Magnitude Doesn’t
How We Tried to Teach Claude to Read Like an Analyst, and the Market Said No
News and earnings sentiment agree, mostly at the extremes
When the insiders and the news disagree: a first look at the cross-signal
Most of the insider trading alpha is gone by the time you see the filing: poof!
Nine Pounds of Ore for an Ounce of Gold
A Day Is Now What a Decade Used to Be
Sentiment is not one signal
How to Break a Financial Sentiment Model Without Changing What It Means
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