TDG vs TDY Stock Comparison
Compare TDG and TDY across AIQ Score, fundamentals, valuation, momentum, risk, analyst expectations and current market evidence.
What is the main difference between TDG and TDY?
TDY leads the current stock comparison as Teledyne Technologies Incorporated, with the clearest separation coming from value and the broader AIQ evidence mix.
AlgovestIQ AIQ Comparison
TransDigm Group Incorporated vs Teledyne Technologies Incorporated
TDY leads
TDY leads by 7 AIQ points, primarily on Value and Momentum. Wall Street currently favors TDG on target upside.
Fragile: 3 of 6 evidence groups support TDY, and its current signal state is conflicted.
TransDigm Group Incorporated
Teledyne Technologies Incorporated
The Algovestiq AIQ Score currently favors TDY over TDG, 49 versus 42 as of Sep 11, 2026. TDY's advantage is driven primarily by stronger value and momentum. TDY also shows the stronger technical structure relative to its 50-day moving average, though analyst target upside currently favors TDG. 3 of 6 covered evidence groups favor TDY today, and the comparison is rated Fragile on stability: only 3 of 6 covered evidence groups agree. TDY lead: Stable — the AIQ differential has held near 7 points over 30 sessions.
Compare TransDigm Group Incorporated and Teledyne Technologies Incorporated across the Algovestiq AIQ Score, valuation, quality, momentum, risk, technicals and analyst expectations.
Performance over time
Price-return comparison using available daily close history.
Total return comparison
Growth of $10,000
Based on available close-price history. Distribution reinvestment is not added unless already reflected in the source series.
Compare TDG and TDY against another ticker
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AIQ Factor Divergence
Where the two separate, on the four dimensions behind the AIQ Score. Bars read outward from a shared zero: further from the centre is a wider gap.
- Value39 vs 59TDY +20
- Momentum9 vs 13TDY +4
- Quality57 vs 54Even
- Risk Resilience76 vs 78Even
3 of 6 evidence groups favor TDY. TDY’s edge is concentrated in value and momentum.
What changed since the last close
Latest scored session 2026-09-10, compared against the prior scored session 2026-09-09.
Largest factor move: Momentum +1
No new signals fired.
Largest factor move: Momentum +2
No new signals fired.
TDY's lead widened by 1 AIQ points in the latest snapshot.
Deeper signal detail for each name lives on its own signals page — TDG and TDY both carry a full feed there.
The central trade-off
TDY (Teledyne Technologies Incorporated): the stronger current systematic profile, led by value and momentum.
TDG (TransDigm Group Incorporated): the counter-case, on fundamentals, analyst expectations.
The AIQ Score and Wall Street therefore point in different directions on this pair.
Which one fits your objective
The same two names rank differently depending on what you are optimizing for. All six reads are shown at once — none of them is hidden behind a toggle.
Balanced
TDYTDY on the overall AIQ Score, which weights Quality and Value most heavily.
Growth
TDYTDY on combined revenue and EPS growth.
Value
TDYTDY on the peer-relative Value factor, by 20 points.
Momentum
TDYTDY on the Momentum factor, by 4 points.
Lower downside
TDYTDY carries the lower 1-month annualized volatility.
Analyst upside
TDGTDG on implied upside to the consensus price target.
AIQ vs Wall Street
The model and the Street disagree here: AIQ favors TDY, analyst targets favor TDG. That disagreement is the most useful thing on this page.
| Measure | TDG | TDY | Note |
|---|---|---|---|
| Implied upside to target | +33.1% | +16.2% | TDG has more room |
| Target dispersion | +23.1% | +52% | Lower is tighter analyst agreement |
| Consensus | Buy | Buy | Context, not a primary driver |
| Analysts covering | 6 | 6 | Higher coverage generally improves confidence |
The two are measuring different things. The AIQ Score reads current fundamentals, valuation, trend and risk; analyst targets price forward expectations. A divergence of this kind is either a contrarian opportunity or a sign the model is missing something already priced in — it is worth resolving before acting on either.
Analyst targets are expectations, not predictions. Dispersion matters as much as the midpoint.
AIQ Agreement Matrix
3 of 6 covered evidence groups favor TDY. A wide gap backed by one group is a weaker case than a narrow gap backed by five.
| Evidence group | Favors | Reading |
|---|---|---|
| AIQ Score | TDY | 42 vs 49 |
| Fundamentals | TDGon balance | revenue growth 7.7% vs 6.6%; EPS growth 2.1% vs 10.7%; TTM ROE -21% vs 9.1%; gross margin 59.6% vs 39%; operating margin 46.2% vs 19.4% — TDG takes 3 of 5 decided legs, not all of them |
| Valuation | TDY | Value 39 vs 59 |
| Technicals | TDY | Price vs 50-day -7.3% vs -6.2%; vs 200-day -11% vs -2.9% |
| Risk Resilience | Even | Risk Resilience 76 vs 78 |
| Analyst expectations | TDG | Target upside 33.1% vs 16.2% |
✓ agrees with the overall verdict · ✕ points the other way. Groups marked “not covered” lack data on one or both of TDG and TDY and are excluded from the count.
AIQ Decision Stability
The conclusion is sensitive to small changes. Treat the lead as provisional and watch the flip conditions below.
- The AIQ gap is moderate at 7 points.
- Only 3 of 6 covered evidence groups agree. (argues the conclusion is provisional)
- The lead has been steady session to session. (supports the conclusion holding)
- The leader is throwing conflicting signals. (argues the conclusion is provisional)
Stability combines the score gap, how broadly the evidence agrees, how steady the lead has been across daily snapshots, the current signal state on both names, and analyst dispersion on TDY.
How the comparison changed
119 daily snapshots · May 4 – Sep 10TDY lead: Stable — the AIQ differential has held near 7 points over 30 sessions.
- Today
- TDY +7
- 42 vs 49
- 7 sessions ago
- TDY +5
- 43 vs 48
- 30 sessions ago
- TDY +9
- 47 vs 56
- 90 sessions ago
- TDY +5
- 58 vs 63
The lead changed hands 9 times in this window, most recently on Jun 29 when TDY moved ahead of TDG.
AIQ Signal Divergence
Only the signals that bear on the head-to-head. A conflicted name is carrying bullish and bearish rules at the same time — the technical evidence is not pointing one way.
0 bullish / 5 bearish
- Death Cross Active — bearish, trend, long horizon (2.92%)
- Keltner Channel Breakdown — bearish, volatility, short horizon
- 52-Week Low Proximity — bearish, risk, long horizon (0.0%)
2 bullish / 2 bearish, conflicted
- Golden Cross Active — bullish, trend, long horizon (4.62%)
- Keltner Channel Breakdown — bearish, volatility, short horizon
- RSI Oversold - Potential Bounce — bullish, momentum, short horizon
TDY leads the comparison while carrying a conflicted signal state, which is one reason the stability rating is not higher.
Price vs model alignment
Whether the latest session's price move confirms what the model did over the same session, or contradicts it.
Neither the price nor the AIQ Score moved enough in the latest session to confirm or contradict the other (price +1.19%, AIQ 0 points).
Price and the AIQ Score both moved up over the latest session (price +1.22%, AIQ +1 points).
What would flip this result
A state, not a forecast. These are the specific, observable changes that would reverse the verdict — not a price prediction.
- 1TDG closes the Value gap — currently 20 points behind, the largest single contributor to TDY's edge.
- 2TDG's Death Cross Active resolves — a bearish trend rule currently active against it.
- 3TDY's conflicting signal state resolves bearish — it currently carries 2 bullish and 2 bearish rules at once.
- 4A regime shift changes factor weighting — Quality and Value carry the heaviest weights in the composite, so a rotation toward either would move the result most.
The full evidence
Every number behind the verdict. The leader is called above each group so you are not left to solve it from the table.
Fundamentals
TDG leads on balance| Metric | TDG | TDY |
|---|---|---|
| Revenue growth (YoY) | 7.7% | 6.6% |
| EPS growth (YoY) | 2.1% | 10.7% |
| Gross margin | 59.6% | 39% |
| Operating margin | 46.2% | 19.4% |
| Return on equity (TTM) | -21% | 9.1% |
| Debt to equity | -2.74 | 0.19 |
Performance
TDY leads 5 of 6 windows| Metric | TDG | TDY |
|---|---|---|
| 1 week (5 sessions) | -2.3% | -1.6% |
| 1 month (20 sessions) | -8.8% | -13.1% |
| 3 months (63 sessions) | -7.1% | -0.8% |
| 6 months (126 sessions) | -10.4% | -9% |
| Year to date | -14.3% | 16.8% |
| 1 year (252 sessions) | -12.9% | 9.2% |
Technicals
TDY has the stronger structure| Metric | TDG | TDY |
|---|---|---|
| RSI (14) | 31.1 | 23.1 |
| ADX (14) | 19.2 | 34.6 |
| Price vs 50-day | -7.3% | -6.2% |
| Price vs 200-day | -11% | -2.9% |
| Volatility (1M, annualized) | 19.6% | 17% |
Risk
Split| Metric | TDG | TDY |
|---|---|---|
| Beta | 0.69 | 1.1 |
| Sharpe ratio | -0.57 | 0.33 |
| Sortino ratio | -0.77 | 0.59 |
| Max drawdown | -22.4% | -18.4% |
| Current drawdown | -22.3% | -13.7% |
| Annualized volatility | 27.3% | 26.4% |
| Value at risk (95%) | -2.6% | -2.3% |
Straight answers
Each answer is regenerated from the current snapshot, not written once and left to age.
Which is better, TDG or TDY?
On the Algovestiq AIQ Score, TDY is the stronger of the two as of Sep 11, 2026, scoring 49 against TDG's 42. The edge comes from value and momentum. This is a systematic score, not a recommendation: it ranks the two on the same evidence, it does not know your holding period or tax position.
Is TDG or TDY the better buy right now?
TDY carries the stronger systematic profile as of Sep 11, 2026, and the comparison is rated Fragile — 3 of 6 covered evidence groups agree. A Fragile rating means the conclusion is sensitive: only 3 of 6 covered evidence groups agree. Treat the lead as provisional.
Why does the AIQ Score favor TDY over TDG?
The composite weights Quality, Value, Momentum and Risk Resilience. TDY leads Value by 20 points; TDY leads Momentum by 4 points. Where the two split, the factor with the larger weight carries the result.
Which has more analyst upside, TDG or TDY?
Analyst price targets imply +33.1% upside for TDG and +16.2% for TDY, so the Street currently favors TDG. That points the opposite way to the AIQ Score, which favors TDY. The two are measuring different things: the model reads current fundamentals, valuation, trend and risk; the Street is pricing forward expectations. A divergence of this kind is either a contrarian opportunity or a sign the model is missing something the analysts have already priced — it is the single most useful row on this page to investigate. Analyst targets are expectations, not predictions, and dispersion matters as much as the midpoint.
Which is better value, TDG or TDY?
TDY is the better-valued of the two on the peer-relative Value factor. TDY on the peer-relative Value factor, by 20 points. The Value factor reads valuation relative to sector peers and to the company's own fundamental quality, so it is not the same as simply having the lower multiple.
Which has stronger growth, TDG or TDY?
TDY on combined revenue and EPS growth. Growth here is measured on reported revenue and earnings, not on forward estimates — it describes what the businesses have delivered, not what the Street expects next.
Which has stronger momentum, TDG or TDY?
TDY on the Momentum factor, by 4 points. Momentum is one of the four weighted factors in the AIQ composite. It has documented persistence over three- to twelve-month horizons, which makes it a timing input rather than a reason to hold something indefinitely.
Which is riskier, TDG or TDY?
TDY is the more resilient of the two, so the other name carries the higher downside risk. TDY carries the lower 1-month annualized volatility. Risk Resilience is a weighted factor in the composite; position sizing usually responds to it more usefully than the buy/avoid decision does.
Is TDG more profitable than TDY?
The profitability evidence is mixed: gross margin 59.6% vs 39%; operating margin 46.2% vs 19.4%; ttm roe -21% vs 9.1%. TDG leads on two measures and TDY on one measure, and there is no single profitability composite that resolves the split — which of the two reads as "more profitable" depends on whether you weight pricing power or operating leverage.
Is TDY's lead over TDG getting stronger or weaker?
TDY lead: Stable — the AIQ differential has held near 7 points over 30 sessions. This is measured from 119 daily comparison snapshots between 2026-05-04 and 2026-09-10. The lead has changed hands 9 times in that window, most recently on 2026-06-29, when TDY moved ahead of TDG.
What would change the TDG vs TDY verdict?
The result is a state, not a forecast, so it changes when the underlying evidence changes. Concretely: TDG closes the Value gap — currently 20 points behind, the largest single contributor to TDY's edge; TDG's Death Cross Active resolves — a bearish trend rule currently active against it; TDY's conflicting signal state resolves bearish — it currently carries 2 bullish and 2 bearish rules at once; a regime shift changes factor weighting — Quality and Value carry the heaviest weights in the composite, so a rotation toward either would move the result most.
What do the current signals say about TDG and TDY?
TDG: 0 bullish / 5 bearish. TDY: 2 bullish / 2 bearish, conflicted. A conflicted state means bullish and bearish rules are active on the same name at once — the technical evidence is not pointing one way, and a decision taken on it carries more timing risk. The most decision-relevant rule on TDG is Death Cross Active (bearish, long horizon). On TDY it is Golden Cross Active (bullish, long horizon).
Compare TDG and TDY with others
Continue your research
This page answers which of the two. These answer the questions on either side of it.
How this comparison is scored
The Algovestiq AIQ Score composites four factors — Quality, Value, Momentum and Risk, each carrying a fixed weight. Sentiment is reported separately as SentimentPulse and is not folded into the composite. Scores refresh every trading day, and this page regenerates from the latest snapshot rather than being written once.
The verdict names a leader, states how broadly six independent evidence groups agree, and rates how durable that conclusion is given the score gap, its recent trajectory and the current signal state on both names.
How to use side-by-side comparison →This comparison is informational and educational, not investment advice. AIQ scores update daily; re-check after earnings, guidance or macro data that materially changes either name’s factor profile.