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CASE STUDY · CARG · Consumer Cyclical

CARG Case Study: Caught at OPPORTUNITY in late 2021, then it lost money

JumpstartSignal flagged CarGurus, Inc. (CARG) on 2 individual trading days across 1 signal clusters between 2021 and 2021.

Nov 4, 2021 First flagged
$35.75
-9% Best return
(vs +56% SPY)
2 Signal days
1 clusters
70 Avg score
out of 100
Signal Breakdown
🏆 0 SPOTLIGHT ✅ 2 OPPORTUNITY 📌 168 MONITOR
Win Rate
0% (0/2 positive)
Price Buckets
🚀 Growth ($5–$20) · ⚖️ Momentum ($20–$100)

About CarGurus, Inc.

CarGurus, Inc. operates an online automotive marketplace and research platform in the U.S., U.K., and Canada, using proprietary technology, algorithms, and data analytics to help consumers compare local listings for new and used cars, assess deal ratings, and connect with dealers.

The Story

CarGurus crossed into an OPPORTUNITY signal on 2021-11-04 at $35.75, an online auto-marketplace name running with the momentum of that period. It then lost money. By early 2026 the stock was down roughly 9% from the entry, while SPY returned about 56% over the same span. That is both a dollar loss and a wide gap to the market: the late-2021 peak in growth valuations gave way to a rate-driven repricing, and the signal landed near the top of it. One caveat applies to every entry we publish: backtests do not include sentiment scoring. In live daily screening, AI news analysis adds 0 to 10 points based on recent coverage. Sentiment can change which signals fire, but it does not change how the stock performed.

Signal Log: All 2 Days

Every day CARG passed our 5-stage pipeline, with the signal level and score breakdown. How scoring works →

Cluster 1 · Nov '21 · 2 signals · best return -9%
Nov 4, 2021 ✅ OPP 70/100 (Q:53 E:7 S:0 B:10) -9%
Nov 5, 2021 ✅ OPP 70/100 (Q:53 E:7 S:0 B:10) -11%
🏆 SPOTLIGHT ✅ OPPORTUNITY 📌 MONITOR 📈 Deep dive on TradingView →

Returns measured from entry price to 2026-02-01. Split-adjusted OHLCV. Score breakdown: Q=quality (0–60), E=entry (0–20), S=sentiment (0–10), B=sector bonus (0–10). Sentiment scores show as 0 because backtests use historical data, AI news sentiment analysis is only available in our live daily screening. In live mode, positive news coverage typically adds 5–10 points. Past performance does not indicate future results.

What If You Invested $10,000 at the First Signal?

$10,000 in CARG on Nov 4, 2021 $9,060
$10,000 in SPY on the same day $15,590

Hypothetical buy-and-hold from first signal date to 2026-02-01. Not investment advice.

What This Teaches

Timing into a late-cycle momentum peak is one of the ways a quality signal still loses. CarGurus had the profile our system scores well, but the entry came just before a broad de-rating of growth names, and the position never recovered to the entry price. We show it because a track record that only featured winners would be dishonest. The losers are part of the same backtest, sized small and spread across many signals.

See how the full 5-stage pipeline and scoring system works →

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Frequently Asked Questions

How many individual signal days did CARG have?
CARG was flagged on 170 total signal days. Of those, 0 reached SPOTLIGHT and 2 reached OPPORTUNITY, grouped into 1 clusters (consecutive daily signals within 14 days are grouped). An additional 168 days scored at MONITOR level, shown in the signal breakdown but not in the charts above.
What score did CARG typically achieve?
Across the 2 SPOTLIGHT/OPPORTUNITY signal days, CARG averaged a combined score of 70/100. The scoring combines fundamental quality (0–60), entry timing (0–20), AI news sentiment (0–10), and sector bonus (0–10). Note: sentiment scores are zero in backtests — AI news analysis is only available in live daily screening. OPPORTUNITY requires combined ≥69. CARG never cleared the additional quality and entry gates needed for SPOTLIGHT (combined ≥76, quality ≥45, entry ≥11).
What if I invested $10,000 in CARG at the first signal?
A $10,000 investment in CARG on Nov 4, 2021 at $35.75 would be worth $9,060 as of 2026-02-01 — a return of -9%. The same amount in SPY would be $15,590 (+56%). This is one of the cases where the signal did not beat the market, included here for full transparency.
Why did a high-scoring signal on CARG underperform the market?
Our scoring system detects fundamental quality and technical momentum alignment at a point in time. It cannot predict macro sector deterioration, competitive moat erosion, or broader market regime shifts that occur after the signal date. CARG is included here as a loss case for full transparency — our 14-year backtest shows a 80% win rate, meaning roughly 1 in 3 signals underperforms. Diversification across many signals absorbs cases like this one.
Does JumpstartSignal recommend buying CARG now?
No. JumpstartSignal is a screening tool, not investment advice. Whether CARG currently passes our 5-stage filter depends on real-time market conditions. Sign up for the free daily email to see current SPOTLIGHT and OPPORTUNITY signals.