Developer & Researcher

Angad Chahil

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01 / MARKETSQuantorSignal · live product

Screen a universe for signal in seconds.

QuantorSignal ranks a stock universe on the factor you care about, then shows what clears the bar. Switch factors, drag the threshold — the board re-ranks and filters live, just like the real screener.

Rank by factor
Threshold
Score ≥70

A live re-creation. The product runs the real factor model over the S&P universe with a backtester behind it.

Factor rankingBacktesterFastAPI · Python
Universe0 / 8
Inside the product
QuantorSignal — Markets overview
Markets desk
QuantorSignal — Screener
Factor screener
QuantorSignal — AI Analyst
AI analyst
QuantorSignal — Stock detail
Stock detail
02 / BRAINSEEG Lab · manuscript in progress

Decoding what the brain saw from its electricity.

A 256-channel net records the scalp; spatial filtering and a trained classifier turn micro-volts into a decision. Pick a classifier, choose the stimulus, and fire — watch the response ripple across the montage and get decoded.

256-channel montageidle
Classifier
Stimulus
Live channels & decodestreaming
awaiting stimulus0%

Illustrative of the decoding pipeline (target vs. non-target, d′ & AUC scored). Not live subject data.

03 / BIOLOGYT2PW · research internship

Turning a paragraph of biology into a living pathway.

T2PW reads plain-language pathway descriptions and rebuilds them as structured, ID-mapped diagrams — extraction, enrichment, and grounding to HMDB / KEGG / ChEBI. Extract the pathway, then reveal the database IDs it resolved.

Input · plain textidle
Glucose is phosphorylated by hexokinase to form glucose-6-phosphate, consuming one ATP and releasing ADP. The glucose-6-phosphate is then isomerized to fructose-6-phosphate by phosphoglucose isomerase.
LLM extractionID mappingPWML / SBMLPython
Reconstructed pathway● decoding
04 / CLINICALStemFellowship · manuscript presented Jul 2026

Auditing ICU risk models for who they fail.

Using MIMIC-III intensive-care records, this study measures how often disease-prediction models miss real cases — the false-negative rate — and whether those misses land unevenly across demographic groups. Then it tests a reweighting fix across five conditions, with every change significance-tested. The honest answer is mixed: it helps in some cohorts more than others. Presented July 2026.

Held-out test resultsbaseline → reweighted
BaselineReweighted · improvedReweighted · worse
MIMIC-IIIAlgorithmic fairnessSignificance testingPython · notebooks
At a glanceheld-out test
5ICU disease cohorts
5demographic groups audited
≤1.5 ptaccuracy change across every cohort
−10.6 ptlargest FNR reduction — sepsis, p<0.001
Poster & slides Presented July 2026 — image coming soon.

Aggregate held-out results from the study repo. No patient-level data — MIMIC-III is de-identified and access-controlled.

05 / SOFTWAREProducts & side work

Things I've shipped.

Real products with real users — not demos.

Live

LoadBuddy

Logistics & operations software for trucking companies — dispatch, loads, and fleet in one place. Web and mobile.

loadbuddy.org →
Live

QuantorSignal

A market research desk: factor screener, backtester, and watchlists for active traders and analysts.

quantorsignal.com →
Side hobby

Quant Trading