SPY vs STT Stock Comparison
SPY currently leads STT in this stock comparison, with AIQ scores of 66 vs 52. The clearest difference is momentum, while STT has the stronger value profile.
What is the main difference between SPY and STT?
SPY leads the current stock comparison as State Street SPDR S&P 500 ETF, with the clearest separation coming from momentum and the broader AIQ evidence mix.
AlgovestIQ AIQ Comparison
State Street SPDR S&P 500 ETF vs State Street Corporation
SPY leads
SPY leads by 14 AIQ points, primarily on Momentum and Quality, but the lead has narrowed from 17 points over 30 sessions.
Competitive: 3 of 4 evidence groups support SPY, its lead is narrowing, and its current signal state is conflicted.
State Street SPDR S&P 500 ETF
State Street Corporation
The Algovestiq AIQ Score currently favors SPY over STT, 66 versus 52 as of Oct 22, 2026. SPY's advantage is driven primarily by stronger momentum and quality, while STT holds the stronger value profile. SPY also shows the stronger technical structure relative to its 50-day moving average. 3 of 4 covered evidence groups favor SPY today, and the comparison is rated Competitive on stability: the leader's advantage has been narrowing. SPY lead: Weakening — the AIQ differential moved from 17 to 14 points over 30 sessions.
Compare State Street SPDR S&P 500 ETF and State Street Corporation across the Algovestiq AIQ Score, valuation, quality, momentum, risk, technicals and analyst expectations.
Performance over time
Total return with distributions reinvested, from daily closes.
Total return comparison
Growth of $10,000, distributions reinvested
Split-adjusted closes; each distribution is reinvested at the close on its ex-dividend date. Taxes and trading costs are not modeled.
Compare SPY and STT against another ticker
Open a multi-ticker workspace without changing this focused pair page.
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.
- Momentum63 vs 29SPY +34
- Quality84 vs 59SPY +25
- Risk Resilience88 vs 72SPY +16
- Value41 vs 53STT +12
3 of 4 evidence groups favor SPY. SPY’s edge is concentrated in momentum and quality; STT keeps a meaningful value edge.
What changed since the last close
Latest scored session 2026-10-20, compared against the prior scored session 2026-10-19.
Largest factor move: Momentum +16
New signals
- Uptrend Structure Active — bullish, trend, long horizon
Largest factor move: Momentum -1, not enough on its own to move the overall score.
No signal started or stopped since the prior session; its 3 active signals are unchanged.
SPY's lead widened by 4 AIQ points in the latest session.
Deeper signal detail for each name lives on its own signals page — SPY and STT both carry a full feed there.
The central trade-off
SPY (State Street SPDR S&P 500 ETF): the stronger current systematic profile, led by momentum and quality.
STT (State Street Corporation): the counter-case, on value, valuation — but at materially higher volatility, 17.8% against 9%.
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
SPYSPY on the overall AIQ Score, which weights Quality and Value most heavily.
Growth
EvenGrowth figures are not covered for both names.
Value
STTSTT on the peer-relative Value factor, by 12 points.
Momentum
SPYSPY on the Momentum factor, by 34 points.
Lower downside
SPYSPY on Risk Resilience, by 16 points.
Analyst upside
EvenAnalyst targets are level or not covered for both names.
AIQ vs Wall Street
Where the systematic read and the analyst consensus line up — and where they do not.
| Measure | SPY | STT | Note |
|---|---|---|---|
| Implied upside to target | — | +10.7% | Level |
| Target dispersion | — | +15.5% | Lower is tighter analyst agreement |
| Consensus | — | Buy | Context, not a primary driver |
| Analysts covering | — | 9 | Higher coverage generally improves confidence |
Analyst targets are expectations, not predictions. Dispersion matters as much as the midpoint.
AIQ Agreement Matrix
3 of 4 covered evidence groups favor SPY. A wide gap backed by one group is a weaker case than a narrow gap backed by five.
| Evidence group | Favors | Reading |
|---|---|---|
| AIQ Score | SPY | 66 vs 52 |
| Fundamentals | Not covered | Not covered |
| Valuation | STT | Value 41 vs 53 |
| Technicals | SPY | Price vs 50-day 0.6% vs -7.8%; vs 200-day 5.9% vs 5.8% |
| Risk Resilience | SPY | Risk Resilience 88 vs 72 |
| Analyst expectations | Not covered | Not covered |
✓ agrees with the overall verdict · ✕ points the other way. Groups marked “not covered” lack data on one or both of SPY and STT and are excluded from the count.
AIQ Decision Stability
The two are close enough that your objective, not the score, should decide.
- The AIQ gap is wide at 14 points. (supports the conclusion holding)
- The leader's advantage has been narrowing. (argues the conclusion is provisional)
- 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 SPY.
How the comparison changed
120 daily snapshots · Jun 21 – Oct 20SPY lead: Weakening — the AIQ differential moved from 17 to 14 points over 30 sessions.
- Today
- SPY +14
- 66 vs 52
- 7 sessions ago
- SPY +17
- 66 vs 49
- 30 sessions ago
- SPY +17
- 66 vs 49
- 90 sessions ago
- SPY +9
- 70 vs 61
The lead changed hands 8 times in this window, most recently on Jul 31 when SPY moved ahead of STT.
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.
4 bullish / 1 bearish / 1 neutral, conflicted
Only SPY
- ATR Contraction - Coiling — neutral, volatility, short horizon (0.92%)
- EMA Ribbon Expansion Bullish — bullish, trend, medium horizon
- 52-Week High Proximity — bullish, risk, long horizon (1.2%)
- Uptrend Structure Active — bullish, trend, long horizon
2 bullish / 1 bearish, conflicted
Only STT
- RSI Oversold - Potential Bounce — bullish, momentum, short horizon
Both carry 2 more signals that do not separate them: Golden Cross Active, MACD Bearish Crossover.
SPY 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.
Price and the AIQ Score both moved up over the latest session (price +0.53%, AIQ +4 points).
Neither the price nor the AIQ Score moved enough in the latest session to confirm or contradict the other (price +1.42%, AIQ 0 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.
- 1STT closes the Momentum gap — currently 34 points behind, the largest single contributor to SPY's edge.
- 2STT's MACD Bearish Crossover resolves — a bearish momentum rule currently active against it.
- 3SPY's conflicting signal state resolves bearish — it currently carries 4 bullish and 1 bearish rules at once.
- 4The narrowing continues — the lead has already given back 3 points over 30 sessions, and a further 14-point move would eliminate SPY's advantage entirely.
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
Split| Metric | SPY | STT |
|---|---|---|
| Revenue growth (YoY) | — | 0.4% |
| EPS growth (YoY) | — | 1.1% |
| Gross margin | — | 66.4% |
| Operating margin | — | 20% |
| Return on equity (TTM) | — | 13.1% |
| Debt to equity | — | 0.91 |
Performance
SPY leads 4 of 6 windows| Metric | SPY | STT |
|---|---|---|
| 1 week (5 sessions) | -1.2% | -4.3% |
| 1 month (20 sessions) | -0.6% | -7.6% |
| 3 months (63 sessions) | 2.9% | -9.5% |
| 6 months (126 sessions) | 9.2% | 8.5% |
| Year to date | 12.8% | 29.1% |
| 1 year (252 sessions) | 16.4% | 47.5% |
Technicals
SPY has the stronger structure| Metric | SPY | STT |
|---|---|---|
| RSI (14) | 56.2 | 26.6 |
| ADX (14) | 12.5 | 38.2 |
| Price vs 50-day | 0.6% | -7.8% |
| Price vs 200-day | 5.9% | 5.8% |
| Volatility (1M, annualized) | 9% | 17.8% |
Risk
SPY is the more resilient| Metric | SPY | STT |
|---|---|---|
| Beta | 1 | 1.05 |
| Sharpe ratio | 0.91 | 1.62 |
| Sortino ratio | 1.39 | 2.33 |
| Max drawdown | -9.1% | -14.8% |
| Current drawdown | -1.3% | -14.3% |
| Annualized volatility | 12.8% | 24.4% |
| Value at risk (95%) | -1.4% | -2.5% |
Straight answers
Each answer is regenerated from the current snapshot, not written once and left to age.
Which is better, SPY or STT?
On the Algovestiq AIQ Score, SPY is the stronger of the two as of Oct 22, 2026, scoring 66 against STT's 52. The edge comes from momentum and quality. STT is not without a case — it holds the better value profile, which matters more if that is the objective you are optimizing for. 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 SPY or STT the better buy right now?
SPY carries the stronger systematic profile as of Oct 22, 2026, and the comparison is rated Competitive — 3 of 4 covered evidence groups agree. A Competitive rating means the two are close enough that your objective, not the score, should decide.
Why does the AIQ Score favor SPY over STT?
The composite weights Quality, Value, Momentum and Risk Resilience. SPY leads Momentum by 34 points; SPY leads Quality by 25 points; SPY leads Risk Resilience by 16 points. Where the two split, the factor with the larger weight carries the result.
Which has more analyst upside, SPY or STT?
Analyst price targets imply not covered upside for SPY and +10.7% for STT. The model and the Street agree here, which is a broader base of evidence than either alone. Analyst targets are expectations, not predictions, and dispersion matters as much as the midpoint.
Which is better value, SPY or STT?
STT is the better-valued of the two on the peer-relative Value factor. STT on the peer-relative Value factor, by 12 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, SPY or STT?
Growth figures are not covered for both names. 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, SPY or STT?
SPY on the Momentum factor, by 34 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, SPY or STT?
SPY is the more resilient of the two, so the other name carries the higher downside risk. SPY on Risk Resilience, by 16 points. Risk Resilience is a weighted factor in the composite; position sizing usually responds to it more usefully than the buy/avoid decision does.
Is SPY more profitable than STT?
Margin data is not comparable for both names in the current snapshot.
Is SPY's lead over STT getting stronger or weaker?
SPY lead: Weakening — the AIQ differential moved from 17 to 14 points over 30 sessions. This is measured from 120 daily comparison snapshots between 2026-06-21 and 2026-10-20. The lead has changed hands 8 times in that window, most recently on 2026-07-31, when SPY moved ahead of STT.
What would change the SPY vs STT verdict?
The result is a state, not a forecast, so it changes when the underlying evidence changes. Concretely: STT closes the Momentum gap — currently 34 points behind, the largest single contributor to SPY's edge; STT's MACD Bearish Crossover resolves — a bearish momentum rule currently active against it; SPY's conflicting signal state resolves bearish — it currently carries 4 bullish and 1 bearish rules at once; the narrowing continues — the lead has already given back 3 points over 30 sessions, and a further 14-point move would eliminate SPY's advantage entirely.
What do the current signals say about SPY and STT?
SPY: 4 bullish / 1 bearish / 1 neutral, conflicted. STT: 2 bullish / 1 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 SPY is Golden Cross Active (bullish, long horizon). On STT it is Golden Cross Active (bullish, long horizon).
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.