ACWI vs PDSB: Correlation
iShares MSCI ACWI ETF (ACWI) and PDS Biotechnology Corporation (PDSB) show a moderate relationship: their 3-year correlation of weekly returns is 0.46.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACWI and PDSB?
Over the past 3 years, ACWI and PDSB moved with a correlation of 0.46, which is moderate. Little has changed lately, as the 1-year reading of 0.41 lands near the 3-year figure. Over 5 years the correlation is 0.40, and the annualized covariance of weekly returns is 614.6 %².
By 3-year correlation, PDSB places #101 of the 119 assets tracked against ACWI. Their recent paths diverged sharply: over the last 12 months ACWI outperformed by 105.7 percentage points (+22.7% for ACWI against -83.0% for PDSB). Note the risk asymmetry: PDSB runs 7.0 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ACWI vs PDSB: side by side
| ACWI (iShares MSCI ACWI ETF) | PDSB (PDS Biotechnology Corporation) | |
|---|---|---|
| 1-year return | +22.7% | -83.0% |
| 5-year return | +69.0% | -98.5% |
| Volatility (ann.) | 13.8% | 97.2% |
| Beta vs S&P 500 | 0.92 | 2.90 |
| Max drawdown (3Y) | -16.5% | -96.9% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 1.44% | 0.00% |
| Expense ratio | 0.32% | – |
| Assets under management | $32.5B | – |
| Sector / category | ETF · Global | US Listed |
ACWI, iShares's Global Large-Stock Blend fund, carries $32.5B under management, 1590 holdings, a 0.32% expense ratio, a 1.44% trailing dividend yield.
Year-by-year returns
| Year | ACWI | PDSB |
|---|---|---|
| 2022 | -18.4% | +63.0% |
| 2023 | +22.3% | -62.3% |
| 2024 | +17.4% | -67.2% |
| 2025 | +22.4% | -52.8% |
| 2026 | +14.9% | -71.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACWI and PDSB good diversifiers for each other?
Reasonably. At 0.46, ACWI and PDSB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ACWI and PDSB?
As of 2026-08-27, the correlation of weekly returns between ACWI and PDSB is 0.46 over 3 years, 0.41 over 1 year and 0.40 over 5 years.
Is PDSB a good diversifier for ACWI?
Reasonably. At 0.46, ACWI and PDSB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.46 mean?
A reading of 0.46 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/acwi-vs-pdsb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acwi-vs-pdsb/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACWI correlations · PDSB correlations
