Why the [SPY](https://portfolioslab.com/symbol/SPY) year-to-date performance shows only 4.16%.  Should be 9.35% total return.

![](https://portfolioslab.com/static/user-content/qWVxSJgB_FPe-oe9jCyC/wbzlqm2eekkjifzxwsdeq3bm.png)

Year to date SPY performance

Hello, from the charts, SPY seems to be outperforming its benchmark ^GSPC. That looks strange. From my understanding, SPY is designed to closely track the S\&amp;P 500.

Could there be an error in the charts?

Discrepancy between SPY and ^GSPC?

PortfoliosLab pages can be dense. A symbol or portfolio analysis may include returns, drawdowns, risk-adjusted ratios, benchmark metrics, dividends, correlations, and much more. That is useful data, but it is not always easy to interpret or turn into a clear next question.

We added **Copy for AI** to make that workflow simpler.

### What we added

Symbol pages, portfolio pages, and stock comparison pages now include a **Copy for AI** button. It turns the current page into clean markdown context that you can paste into ChatGPT, Claude, or another AI chat.

<img height="207" width="605" src="https://portfolioslab.com/static/user-content/1/haewimuuv5azrwaswl9yd4uy.png" />

The copied output is structured for analysis rather than screenshots. It includes labeled sections, exact metric names, date ranges, benchmark settings, and tables where the data needs to be compared side by side.

That matters because AI tools are much more useful when they are grounded in the actual numbers. Without providing exact context to AI, you can never tell if it's guessing or not. If the model does not know the benchmark, time period, risk-free rate, drawdown history, or correlation data, it may fill in the gaps. So instead of asking a model to infer from a screenshot or a few manually typed metrics, you can give it the full analytical context and ask a sharper question.

It also makes PortfoliosLab analysis more interactive. You can start with the platform's calculations, then use AI to explore the interpretation: what changed, what looks fragile, what is redundant, and what scenario would hurt the portfolio most.

### What you can ask

Copy for AI is useful when you want a second pass on the data. You can ask it to explain a metric, challenge a thesis, compare trade-offs, or stress-test a portfolio against a specific scenario.

For example, after copying a semiconductor ETF page, you might ask why a one-year Sharpe ratio looks exceptional while the all-time Sharpe ratio is much lower. After copying a portfolio, you might ask whether ten holdings are genuinely diversified or mostly one sector bet. After copying a stock comparison, you might ask whether the extra return is worth the extra drawdown and volatility.

<img height="326" width="637" src="https://portfolioslab.com/static/user-content/1/o9fjuge6mof87ntiu34g5gal.png" />

You can also check [documentation](/docs/getting-started/analyze-with-ai) page with prompt examples and sample copied output.

**Availability**

Copy for AI is available on Plus and Pro plans.

Symbol, portfolio, and comparison pages can now be copied as structured markdown context for ChatGPT or Claude

New: Copy PortfoliosLab Pages for ChatGPT or Claude

Portfolio diversification is easy to talk about and hard to measure.

Most portfolios look diversified on the surface. A few ETFs, maybe some stocks, maybe a bond fund. But once you look at how the positions actually move together, the picture often changes. Five holdings can behave like two bets. A "defensive" position can stop hedging when rates move. Two ETFs with different names can be almost the same exposure.

We built [Diversification Analysis](/tools/diversification-analysis) to make that visible.

### What we added

The new tool analyzes your whole portfolio, not just one symbol at a time. It looks at correlations between positions, effective asset count, diversification ratio, portfolio clusters, and low-correlation candidates you can add.

<img height="449" width="655" src="https://portfolioslab.com/static/user-content/1/begncq8why94trqj7u8xrafy.png" />

The first thing you see is a plain-English summary of the portfolio. It names the specific positions that are helping or hurting diversification, and explains the trade-off in normal language. Metrics are useful, but sometimes you need the tool to say: these three holdings are mostly doing the same job.

Below that, the tool groups positions into correlation clusters. This is where redundant holdings become obvious. If a portfolio has several large-cap growth ETFs, they may sit in the same cluster even if their issuer, name, and category labels are different.

<img height="282" width="670" src="https://portfolioslab.com/static/user-content/1/tod87gv27es8zsxsbiwr2s46.png" />

We also added diversification metrics across multiple periods. Effective asset count shows how many independent bets your portfolio really has. Diversification ratio shows how much volatility reduction you get from combining the assets. Seeing those numbers over 1Y, 3Y, 5Y, 10Y, and all-time helps catch drift. A portfolio can become less diversified without any transaction, simply because correlations changed.

### New candidates, not generic lists

The tool now surfaces ETF and stock candidates that historically moved differently from your current holdings.

This is not a generic "top ETFs" list. Candidates are filtered by correlation to the actual portfolio, then by quality. For ETFs we avoid inverse and leveraged products and require meaningful assets under management. For stocks we focus on larger companies and include risk / return rank, so the list is not just "lowest correlation at any cost."

<img height="299" width="672" src="https://portfolioslab.com/static/user-content/1/tm4a40n73cqrxbqjxqxdfzc7.png" />

You can add a candidate directly into the portfolio input, rerun the analysis, and see what changed. That makes the workflow much more practical. Instead of guessing whether a commodity ETF, short-duration bond ETF, or defensive stock helps, you can test it against the current portfolio structure.

### Why this matters for optimization

Portfolio Optimization works better when the input universe is sane.

If you feed an optimizer five highly correlated ETFs, it can still produce nice-looking weights. But the result may be mostly a reshuffle of the same exposure. The optimizer is not magic. It can only choose from the assets you give it.

Diversification Analysis helps before optimization. Use it to remove duplicates, spot clusters, and find candidates with genuinely different return drivers. Then run optimization on a cleaner universe.

This creates a better workflow:

1. Start with [Diversification Analysis](/tools/diversification-analysis).
2. Remove obvious overlap.
3. Add a few low-correlation candidates.
4. Run [Portfolio Optimization](/tools/portfolio-optimization).
5. Validate the optimized result with walk-forward backtesting.

That sequence is more useful than optimizing first and trying to explain the result afterward.

### A few ways to use it

You have a 3-5 ETF portfolio and want to know what is missing. Run Diversification Analysis, look at the clusters, then check ETF candidates. If all holdings behave like equity beta, the tool will usually make that obvious.

You are preparing a portfolio for optimization. Before running [HRP](https://portfolioslab.com/tools/portfolio-optimization/hierarchical-risk-parity), [Risk Parity](https://portfolioslab.com/tools/portfolio-optimization/risk-parity), or [Mean-Variance Optimization](https://portfolioslab.com/tools/portfolio-optimization), use the clusters to remove duplicates and add assets with different behavior. The optimization result should be more stable because the input set is better.

You are reviewing an existing allocation after market conditions changed. Correlations are not fixed. The 1Y view may show that a hedge is no longer doing what you expected, while the longer windows show whether this is temporary or structural.

[Try Diversification Analysis](/tools/diversification-analysis) with your portfolio

New Diversification Analysis shows how your portfolio actually behaves by finding correlated clusters, redundant holdings, diversification metrics, and low-correlation ETF or stock candidates

New: Portfolio Diversification Analysis

 I know the post is written in claude because the hyperlink is on a claude.ai domain.

You're absolutely right! I should have caught that before publishing. Thank you so much for bringing this to my attention — your eagle-eyed observation is truly invaluable to our community 😉

Hi, this is great, but when I click "See all diversifiers", it shows that it's locked and points me to subscribing, even though I'm subscribed. Also, the 3Y and 5Y correlations appear even when a fund is less than 3 years or 5 years old, whereas on the normal ETF and Stock Screeners such indicators would be blank. Any way to fix these? Thank you!

Hi, thanks for the heads up. The table lock behavior has been fixed now.

Reg correlation values, could you give an example? I see there are '-' in the table, where there is not enough overlap to calculate correlations:

<img height="283" width="468" src="https://portfolioslab.com/static/user-content/1/rvdd2p6gm8uj7npzsir9087z.png" />

You know you should diversify. But finding what actually moves differently from what you already own has always been surprisingly hard. We added **Diversifiers** to help with that.

## What we added

Every ETF and mutual fund on PortfoliosLab now has a **Diversifiers** page. Open a fund (for example, [SMH](https://portfolioslab.com/symbol/SMH/diversifiers)) and you can see ETFs, mutual funds, and individual stocks that historically moved differently from it.

<img height="465" width="621" src="https://portfolioslab.com/static/user-content/1/k7uiyi6h7k9mqcsrbmqtvfra.png" />

The page focuses on correlation across 1-year, 3-year, and 5-year windows. That matters because correlation is not fixed. Two assets can look independent over one period and start moving together later. Seeing several time windows helps you spot whether a diversifier is stable, improving, or becoming less useful.

Each page includes a data summary highlighting how many low-correlation funds exist for a given symbol, which asset categories dominate the list, and whether correlations are strengthening or weakening over time. For example, SMH currently has 73 ETFs with low correlation, 13 of which are negatively correlated — and the results go well beyond the obvious bond funds. Scroll past the treasuries and you will find oil, commodities, shipping, energy equities, and dividend funds that all move independently from semiconductors.

Low correlation alone is not enough. A fund can appear uncorrelated simply because it is poorly managed or drifting from its benchmark. Every result on the Diversifiers page includes PortfoliosLab's Risk / Return Rank, which scores funds on risk-adjusted performance. That way you are looking at assets that move differently *and* are still worth owning on their own.

For stocks, we show U.S. companies with at least $1B market cap that move independently from the fund you are researching, together with sector context and the same Risk / Return score.

Behind the scenes, we recalculate millions of correlation pairs daily across 3,000+ ETFs, mutual funds, and large-cap stocks. Every page reflects the latest available data, not a static snapshot.

## Why this matters

Having many positions is not the same as being diversified.

You can hold five large-cap growth ETFs and still have one big bet. You can add another fund that looks different by name, but behaves almost exactly like what you already own. Your broker will show another line in the account. It will not tell you whether the new position actually reduces portfolio risk.

Diversifiers starts from the asset you already know and answers the next question: what can I pair with this that brings a different return driver?

That is useful when you are building a long-term portfolio and want fewer assumptions. Not "I think this should diversify me", but "this has historically moved differently, and I can see how stable that relationship has been."

## A few ways to use it

**Complement a core holding.** You hold a broad U.S. equity ETF and want to add something that is not just another version of the S&amp;P 500. Open its Diversifiers page and look for funds with consistently low correlation across multiple periods.

**Find independent stock ideas.** You want stocks that behave differently from a fund you own. Use the low-correlation stocks table as a starting point, then compare anything interesting before adding it to your portfolio.

Already checked a fund's [Alternatives](https://portfolioslab.com/symbol/SMH/alternatives)? Diversifiers answer the opposite question — not what to swap, but what to pair.

## Availability

Diversifier pages are live for every ETF and mutual fund on PortfoliosLab. Free users can preview the top results. Pro users get full ranked lists with correlation trends across 1Y, 3Y, and 5Y.

[Try it now: SMH Diversifiers →](https://portfolioslab.com/symbol/SMH/diversifiers)

All funds on PortfoliosLab now has a Diversifiers page to help you find what actually moves differently from what you own.

Platform Updates

Discussions by tag spy