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Bond Public

U.S. Treasury 3.88% Bond due May 15, 2043

CUSIP 912810TS7 · 19-Year 10-Month · coupon paid semiannually

AAA·Govt
Yield to maturity i
4.79%
annualized · YTW equals YTM (non-callable)
Current yield i
4.33%
Coupon i
3.88%
Modified duration i
11.9 yr
Convexity i
180.31
Indicative price i
89.464
indicative model price — not a tradable quote
real auctioned at 97.810 · 4.04% high yield (Jul 19, 2023) · reopening — at issuance, not a current price
Settles i
Jun 18, 2026
priced to this date (T+1 basis)
Total to settle i
89.822
per 100 par (clean 89.464 + accrued 0.358) · ≈ $8,982.22 per $10,000 face
Next coupon i
Nov 15, 2026
1.938 per 100 · $193.75 per $10,000 face

Cash-flow timeline

issue → maturity · each tick is a coupon · ◆ today
todayissued Jul 2023par 100 · May 204334 coupons remaining + principal

Terms fetched

Type Bond Coupon-paying, 20 or 30 years. Interest every six months.
Term i19-Year 10-Month
Coupon i3.88% (semiannual)
Maturity iMay 15, 2043
Issue dateJul 31, 2023
Par value i100.00
CallableNo
Amount outstanding i$29.8B
Credit AAA·Govt

Computed metrics computed

Clean price i
89.464
Dirty price i
89.822
Accrued interest i
0.358
per 100 par
Yield to maturity i
4.79%
Yield to worst i
4.79%
Current yield i
4.33%
Modified duration i
11.9 yr
Macaulay duration i
12.2 yr
Convexity i
180.31
DV01 i
0.1072
per 100 par

indicative — matrix-priced off today's par curve.

Remaining cash flows

34 payments, discounted off today's curve
DateCash flowDiscount factorPresent value
Nov 15, 20261.938 0.984321.907
May 15, 20271.938 0.964841.869
Nov 15, 20271.938 0.944601.830
May 15, 20281.938 0.924091.790
Nov 15, 20281.938 0.904671.753
May 15, 20291.938 0.886261.717
Nov 15, 20291.938 0.867671.681
May 15, 20301.938 0.849621.646
Nov 15, 20301.938 0.831581.611
May 15, 20311.938 0.814121.577
Nov 15, 20311.938 0.795971.542
May 15, 20321.938 0.778051.507
Nov 15, 20321.938 0.760101.473
May 15, 20331.938 0.742621.439
Nov 15, 20331.938 0.725411.405
May 15, 20341.938 0.708781.373
Nov 15, 20341.938 0.692101.341
May 15, 20351.938 0.675911.310
Nov 15, 20351.938 0.659671.278
May 15, 20361.938 0.643831.247
Nov 15, 20361.938 0.627881.217
May 15, 20371.938 0.612361.186
Nov 15, 20371.938 0.596791.156
May 15, 20381.938 0.581691.127
Nov 15, 20381.938 0.566551.098
May 15, 20391.938 0.551871.069
Nov 15, 20391.938 0.537161.041
May 15, 20401.938 0.522821.013
Nov 15, 20401.938 0.508540.985
May 15, 20411.938 0.494710.958
Nov 15, 20411.938 0.480860.932
May 15, 20421.938 0.467440.906
Nov 15, 20421.938 0.454010.880
May 15, 2043101.938 0.4410144.956
Sum of present values 89.822

Present values sum to the dirty price; subtract 0.358 accrued to get the clean price.

Rate sensitivity i

approximate, from duration & convexity
Parallel rate moveApprox. price changeApprox. indicative price
-200 bp (-2.0%) +27.47% 114.042
-100 bp (-1.0%) +12.83% 100.947
+100 bp (+1.0%) -11.03% 79.595
+200 bp (+2.0%) -20.26% 71.339

Illustrative only — a parallel shift of the whole curve, estimated from modified duration (11.9 yr) and convexity. Real moves are rarely parallel; this is not a forecast.

What to know

Key risks

  • Interest-rate risk. If market yields rise, the price falls — and more so the longer the maturity. See the rate-sensitivity table above.
  • Inflation risk. Fixed coupons lose purchasing power if inflation rises. TIPS are designed to offset this; nominal bills, notes and bonds are not.
  • Reinvestment risk. Coupons, and principal at maturity, may have to be reinvested later at lower rates than today's.
  • Liquidity / price risk. Selling before maturity means taking the market price at that time, which can be above or below the indicative value shown here.

Tax

Interest on U.S. Treasuries is subject to federal income tax but is generally exempt from state and local income tax.

How Treasuries are bought

New issues are sold at auction (including directly via TreasuryDirect.gov); outstanding securities trade on the secondary market through a broker. This site is for research only and does not sell or recommend securities.

General information only — not tax, legal or investment advice.

Benchmark yield, past year

All tenors →
4.454.885.31Jan 2026Jun 2026

Par yield of the nearest benchmark tenor — the main input to this bond's price.