SPIP vs TDTT
State Street SPDR Portfolio TIPS ETF against Northern Trust iBoxx 3-Year Target Duration TIPS ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
54%
22 shared positions
Fee gap
6 bp
SPIP is cheaper
1-year return gap
2.8 pts
TDTT is ahead
Larger fund
TDTT
$2.6B
Side by side
| SPIP | TDTT | |
|---|---|---|
| Fund | State Street SPDR Portfolio TIPS ETF | Northern Trust iBoxx 3-Year Target Duration TIPS ETF |
| Issuer | State Street SPDR | Northern Trust FlexShares |
| Category | TIPS | TIPS |
| Expense ratio | 0.12% | 0.18% |
| Assets | $1.1B | $2.6B |
| Average daily dollar volume | $17M | $13M |
| Listed | May 25, 2007 | Sep 19, 2011 |
| FrenzyCap score | 74 | 65 |
| 1-month return | −0.1% | +0.5% |
| 3-month return | −1.9% | −1.0% |
| Year to date | −4.7% | −2.6% |
| 1-year return | −6.5% | −3.8% |
| 30-day volatility | 5.1% | 2.5% |
| Worst drawdown, 1 year | −8.3% | −5.1% |
| Trailing 12-month yield | 5.45% | 4.88% |
| Holdings | 49 | 23 |
| Top 10 weight | 31.7% | 65.6% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$42M thru Jun 2026 | +$37M thru Jul 2026 |
| 30-day implied volatility | 23.2% | 39.8% |
| Holdings as of | as of Oct 20, 2026issuer data | as of Jul 31, 2026SEC filing |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
55% of SPIP · 96% of TDTT| Holding | SPIP | TDTT |
|---|---|---|
| TSY INFL IX N/B 01/32 0.125, due Jan 15, 2032 | 3.25% | 3.67% |
| TSY INFL IX N/B 07/31 0.125, due Jul 15, 2031 | 3.17% | 3.52% |
| TSY INFL IX N/B 01/28 0.5, due Jan 15, 2028 | 3.15% | 3.44% |
| TSY INFL IX N/B 07/30 0.125, due Jul 15, 2030 | 3.02% | 3.44% |
| TSY INFL IX N/B 07/29 0.25, due Jul 15, 2029 | 2.99% | 11.90% |
| TSY INFL IX N/B 10/30 1.125, due Oct 15, 2030 | 2.98% | 3.63% |
| TSY INFL IX N/B 04/30 1.625, due Apr 15, 2030 | 2.93% | 3.58% |
| TSY INFL IX N/B 01/29 0.875, due Jan 15, 2029 | 2.83% | 11.18% |
| TSY INFL IX N/B 07/28 0.75, due Jul 15, 2028 | 2.80% | 3.19% |
| TSY INFL IX N/B 10/28 2.375, due Oct 15, 2028 | 2.73% | 3.11% |
| TSY INFL IX N/B 01/30 0.125, due Jan 15, 2030 | 2.71% | 3.36% |
| TSY INFL IX N/B 01/31 0.125, due Jan 15, 2031 | 2.58% | 3.41% |
| TSY INFL IX N/B 10/29 1.625, due Oct 15, 2029 | 2.47% | 3.60% |
| TSY INFL IX N/B 10/27 1.625, due Oct 15, 2027 | 2.44% | 3.02% |
| TSY INFL IX N/B 04/29 2.125, due Apr 15, 2029 | 2.42% | 11.18% |
| TSY INFL IX N/B 04/28 1.25, due Apr 15, 2028 | 2.30% | 2.94% |
| TSY INFL IX N/B 04/29 3.875, due Apr 15, 2029 | 2.24% | 9.87% |
| TSY INFL IX N/B 04/31 1.25, due Apr 15, 2031 | 2.69% | 1.99% |
| TSY INFL IX N/B 04/28 3.625, due Apr 15, 2028 | 1.90% | 2.38% |
| TSY INFL IX N/B 01/28 1.75, due Jan 15, 2028 | 1.42% | 1.65% |
| TSY INFL IX N/B 01/29 2.5, due Jan 15, 2029 | 1.37% | 1.49% |
| TSY INFL IX N/B 04/32 3.375, due Apr 15, 2032 | 0.62% | 0.68% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · SPIP holdings · TDTT holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.