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Bond Public

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

CUSIP 912810TQ1 · 19-Year 10-Month · coupon paid semiannually

AAA·Govt
Yield to maturity i
4.78%
annualized · YTW equals YTM (non-callable)
Current yield i
4.32%
Coupon i
3.88%
Modified duration i
11.7 yr
Convexity i
174.57
Indicative price i
89.682
indicative model price — not a tradable quote
real auctioned at 99.375 · 3.92% high yield (Apr 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
90.998
per 100 par (clean 89.682 + accrued 1.317) · ≈ $9,099.82 per $10,000 face
Next coupon i
Aug 15, 2026
1.938 per 100 · $193.75 per $10,000 face

Cash-flow timeline

issue → maturity · each tick is a coupon · ◆ today
todayissued May 2023par 100 · Feb 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 iFeb 15, 2043
Issue dateMay 1, 2023
Par value i100.00
CallableNo
Amount outstanding i$30.4B
Credit AAA·Govt

Computed metrics computed

Clean price i
89.682
Dirty price i
90.998
Accrued interest i
1.317
per 100 par
Yield to maturity i
4.78%
Yield to worst i
4.78%
Current yield i
4.32%
Modified duration i
11.7 yr
Macaulay duration i
12.0 yr
Convexity i
174.57
DV01 i
0.1064
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
Aug 15, 20261.938 0.994141.926
Feb 15, 20271.938 0.974421.888
Aug 15, 20271.938 0.954801.850
Feb 15, 20281.938 0.934291.810
Aug 15, 20281.938 0.914171.771
Feb 15, 20291.938 0.895261.735
Aug 15, 20291.938 0.876951.699
Feb 15, 20301.938 0.858461.663
Aug 15, 20301.938 0.840571.629
Feb 15, 20311.938 0.822671.594
Aug 15, 20311.938 0.805091.560
Feb 15, 20321.938 0.786891.525
Aug 15, 20321.938 0.769051.490
Feb 15, 20331.938 0.751191.455
Aug 15, 20331.938 0.733951.422
Feb 15, 20341.938 0.716931.389
Aug 15, 20341.938 0.700411.357
Feb 15, 20351.938 0.683841.325
Aug 15, 20351.938 0.667761.294
Feb 15, 20361.938 0.651641.263
Aug 15, 20361.938 0.635851.232
Feb 15, 20371.938 0.619961.201
Aug 15, 20371.938 0.604551.171
Feb 15, 20381.938 0.589091.141
Aug 15, 20381.938 0.574091.112
Feb 15, 20391.938 0.559061.083
Aug 15, 20391.938 0.544491.055
Feb 15, 20401.938 0.529891.027
Aug 15, 20401.938 0.515660.999
Feb 15, 20411.938 0.501480.972
Aug 15, 20411.938 0.487750.945
Feb 15, 20421.938 0.474010.918
Aug 15, 20421.938 0.460700.893
Feb 15, 2043101.938 0.4473845.604
Sum of present values 90.998

Present values sum to the dirty price; subtract 1.317 accrued to get the clean price.

Rate sensitivity i

approximate, from duration & convexity
Parallel rate moveApprox. price changeApprox. indicative price
-200 bp (-2.0%) +26.88% 113.791
-100 bp (-1.0%) +12.57% 100.953
+100 bp (+1.0%) -10.82% 79.975
+200 bp (+2.0%) -19.9% 71.835

Illustrative only — a parallel shift of the whole curve, estimated from modified duration (11.7 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.