SPY vs ARM Stock Comparison
State Street SPDR S&P 500 ETF vs Arm Holdings plc American Depositary Shares
SPY leads
SPY leads by 20 AIQ points, primarily on Risk Resilience and Momentum.
Stable: 4 of 4 evidence groups support SPY, and its current signal state is conflicted.
State Street SPDR S&P 500 ETF
Arm Holdings plc American Depositary Shares
The Algovestiq AIQ Score currently favors SPY over ARM, 62 versus 42 as of Sep 2, 2026. SPY's advantage is driven primarily by stronger risk resilience and momentum. SPY also shows the stronger technical structure relative to its 50-day moving average. 4 of 4 covered evidence groups favor SPY today, and the comparison is rated Stable on stability: the leader is throwing conflicting signals. SPY lead: Stable — the AIQ differential has held near 20 points over 30 sessions. SPY leads on all four AIQ factor dimensions. Value is itself one of those four, so a sweep is not explained by valuation alone — it deserves additional scrutiny for unmodeled catalysts, expectations or event risk.
Compare State Street SPDR S&P 500 ETF and Arm Holdings plc American Depositary Shares across the Algovestiq AIQ Score, valuation, quality, momentum, risk, technicals and analyst expectations.
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.
- Risk Resilience15%89 vs 39SPY +50
- Momentum25%47 vs 30SPY +17
- Value30%39 vs 24SPY +15
- Quality30%84 vs 72SPY +12
4 of 4 evidence groups favor SPY. SPY’s edge is concentrated in risk resilience and momentum.
What changed since the last close
Latest scored session 2026-09-01, compared against the prior scored session 2026-08-31.
Largest factor move: Momentum -8
No new signals fired.
Largest factor move: Momentum -5
No new signals fired.
SPY's lead narrowed by 1 AIQ points in the latest snapshot.
Deeper signal detail for each name lives on its own signals page — SPY and ARM both carry a full feed there.
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 at 30% each.
Growth
EvenGrowth figures are not covered for both names.
Value
SPYSPY on the peer-relative Value factor, by 15 points.
Momentum
SPYSPY on the Momentum factor, by 17 points.
Lower downside
SPYSPY on Risk Resilience, by 50 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 | ARM | Note |
|---|---|---|---|
| Implied upside to target | — | +54.7% | Level |
| Target dispersion | — | +119.4% | Lower is tighter analyst agreement |
| Consensus | — | Buy | Context, not a primary driver |
| Analysts covering | — | 12 | Higher coverage generally improves confidence |
Analyst targets are expectations, not predictions. Dispersion matters as much as the midpoint.
AIQ Agreement Matrix
4 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 | 62 vs 42 |
| Fundamentals | Not covered | Not covered |
| Valuation | SPY | Value 39 vs 24 |
| Technicals | SPY | Price vs 50-day 1.4% vs -16.8%; vs 200-day 7.2% vs 17.3% |
| Risk Resilience | SPY | Risk Resilience 89 vs 39 |
| 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 ARM and are excluded from the count.
AIQ Decision Stability
The conclusion rests on a wide gap and broad agreement. It is unlikely to turn on a single session.
- The AIQ gap is wide at 20 points. (supports the conclusion holding)
- 4 of 4 covered evidence groups point the same way. (supports the conclusion holding)
- 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 SPY.
How the comparison changed
120 daily snapshots · Apr 20 – Sep 1SPY lead: Stable — the AIQ differential has held near 20 points over 30 sessions.
- Today
- SPY +20
- 62 vs 42
- 7 sessions ago
- SPY +20
- 64 vs 44
- 30 sessions ago
- SPY +22
- 71 vs 49
- 90 sessions ago
- SPY +11
- 57 vs 46
The lead has not changed hands in this window.
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
- Golden Cross Active — bullish, trend, long horizon (6.20%)
- EMA Ribbon Expansion Bullish — bullish, trend, medium horizon
- 52-Week High Proximity — bullish, risk, long horizon (1.9%)
1 bullish / 2 bearish / 1 neutral, conflicted
- Golden Cross Active — bullish, trend, long horizon (40.07%)
- Beta Spike Warning — bearish, risk, long horizon
- ATR Expansion - Breakout Mode — neutral, volatility, short horizon (7.43%)
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 is up while the AIQ Score moved down 2 points over the same session — price and model disagree (price +0.46%, AIQ -2 points).
Price and the AIQ Score both moved down over the latest session (price -0.6%, 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.
- 1ARM closes the Risk Resilience gap — currently 50 points behind, the largest single contributor to SPY's edge.
- 2ARM's Beta Spike Warning resolves — a bearish risk rule currently active against it.
- 3SPY's conflicting signal state resolves bearish — it currently carries 4 bullish and 1 bearish rules at once.
- 4A regime shift changes factor weighting — the composite weights Quality and Value at 30% each, 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
Split| Metric | SPY | ARM |
|---|---|---|
| Revenue growth (YoY) | — | -13.5% |
| EPS growth (YoY) | — | -13.8% |
| Gross margin | — | 95.3% |
| Operating margin | — | 17.3% |
| Return on equity | — | 13% |
| Debt to equity | — | 0.05 |
Technicals
SPY has the stronger structure| Metric | SPY | ARM |
|---|---|---|
| RSI (14) | 38.4 | 30.2 |
| ADX (14) | 14.2 | 9.9 |
| Price vs 50-day | 1.4% | -16.8% |
| Price vs 200-day | 7.2% | 17.3% |
| Volatility (1M, annualized) | 7.2% | 49.4% |
Risk
SPY is the more resilient| Metric | SPY | ARM |
|---|---|---|
| Beta | 1 | 3.3 |
| Sharpe ratio | 1.06 | 1.02 |
| Sortino ratio | 1.51 | 1.87 |
| Max drawdown | -9.1% | -48.8% |
| Current drawdown | -2.1% | -46.6% |
| Annualized volatility | 12.8% | 76.2% |
| Value at risk (95%) | -1.4% | -6.8% |
Straight answers
Each answer is regenerated from the current snapshot, not written once and left to age.
Which is better, SPY or ARM?
On the Algovestiq AIQ Score, SPY is the stronger of the two as of Sep 2, 2026, scoring 62 against ARM's 42. The edge comes from risk resilience 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 SPY or ARM the better buy right now?
SPY carries the stronger systematic profile as of Sep 2, 2026, and the comparison is rated Stable — 4 of 4 covered evidence groups agree. A Stable rating means the gap is wide and the evidence is broad, so the conclusion is unlikely to turn on a single session.
Why does the AIQ Score favor SPY over ARM?
The composite weights Quality at 30%, Value at 30%, Momentum at 25% and Risk Resilience at 15%. SPY leads Risk Resilience by 50 points; SPY leads Momentum by 17 points; SPY leads Value by 15 points. SPY leads on all four AIQ factor dimensions. Value is itself one of those four, so the sweep is not explained by ARM simply being cheaper — it warrants extra scrutiny for unmodeled catalysts, forward expectations or event risk the factors do not capture.
Which has more analyst upside, SPY or ARM?
Analyst price targets imply not covered upside for SPY and +54.7% for ARM. 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 ARM?
SPY is the better-valued of the two on the peer-relative Value factor. SPY on the peer-relative Value factor, by 15 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 ARM?
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 ARM?
SPY on the Momentum factor, by 17 points. Momentum carries 25% of 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 ARM?
SPY is the more resilient of the two, so the other name carries the higher downside risk. SPY on Risk Resilience, by 50 points. The Risk Resilience factor weights 15% of the composite; position sizing usually responds to it more usefully than the buy/avoid decision does.
Is SPY more profitable than ARM?
Margin data is not comparable for both names in the current snapshot.
Is SPY's lead over ARM getting stronger or weaker?
SPY lead: Stable — the AIQ differential has held near 20 points over 30 sessions. This is measured from 120 daily comparison snapshots between 2026-04-20 and 2026-09-01. The lead has not changed hands in that window.
What would change the SPY vs ARM verdict?
The result is a state, not a forecast, so it changes when the underlying evidence changes. Concretely: ARM closes the Risk Resilience gap — currently 50 points behind, the largest single contributor to SPY's edge; ARM's Beta Spike Warning resolves — a bearish risk rule currently active against it; SPY's conflicting signal state resolves bearish — it currently carries 4 bullish and 1 bearish rules at once; a regime shift changes factor weighting — the composite weights Quality and Value at 30% each, so a rotation toward either would move the result most.
What do the current signals say about SPY and ARM?
SPY: 4 bullish / 1 bearish / 1 neutral, conflicted. ARM: 1 bullish / 2 bearish / 1 neutral, 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 ARM it is Golden Cross Active (bullish, long horizon).
Compare SPY and ARM with others
How this comparison is scored
The Algovestiq AIQ Score composites four factors — Quality (30%), Value (30%), Momentum (25%) and Risk (15%). 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.