NSE Indices to revise Nifty fixed income indices from October 30

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Changes to Nifty fixed income indices

Highlights

From October 30, 2026, 6.68% GOVT. STOCK 2033 will be removed from the Nifty G-sec indices and other government securities will be added across various maturities.
In the Nifty Ultra Short Duration Debt Index A-I, the weight of the Nifty 3 Month CD Index - A will increase from 25.91% to 43.62%, while the weight of the 6 Month CD Index - A will decrease from 49.46% to 33.48%.
These changes will significantly affect portfolio allocation, rebalancing, and tracking strategies for investment products tracking fixed income benchmarks.

This article was translated from the original. Read the original version by our correspondent here.

G-sec indices to be rebalanced from October 30

According to NSE India, the Index Maintenance Sub-Committee, Debt, of NSE Indices Limited has approved several changes to Nifty G-sec-based indices, effective October 30, 2026. The changes will take effect after the market closes on October 29, 2026.

6.68% GOVT. STOCK 2033, ISIN IN0020250133, will be removed from the Nifty 4-8 Year G-sec Index and replaced with 6.10% GOVT. STOCK 2031, ISIN IN0020210095. 6.83% GOVT. STOCK 2039, ISIN IN0020080050, will be removed from the Nifty 11-15 Year G-sec Index, while 7.23% GOVT. STOCK 2039, ISIN IN0020240027, will be added.

6.68% GOVT. STOCK 2033 will also be removed from the Nifty Composite G-sec Index and replaced with 7.63% GOVT. STOCK 2056, ISIN IN0020260082. The NIFTY 8-13 Year G-sec Index and Nifty 15 Year and Above G-sec Index will remain unchanged.

Among the duration-based indices, 8.15% GOVT. STOCK 2026, ISIN IN0020140060, and 5.74% GOVT. STOCK 2026, ISIN IN0020210186, will be removed from the Nifty Ultra Short Duration G-sec Index, while 6.79% GOVT. STOCK 2027, ISIN IN0020170026, will be added. The same 6.79% GOVT. STOCK 2027 will be removed from the Nifty Low Duration G-sec Index, and 8.28% GOVT. STOCK 2027, ISIN IN0020070069, will be added.

6.03% GOVT. STOCK 2029, ISIN IN0020250125, will be removed from the Nifty Short Duration G-sec Index and replaced with 6.20% GOVT. STOCK 2029, ISIN IN0020260058. 6.68% GOVT. STOCK 2033 will be removed from the Nifty Medium to Long Duration G-sec Index and replaced with 6.10% GOVT. STOCK 2031, while the Nifty Medium Duration G-sec Index and Nifty Long Duration G-sec Index will remain unchanged.

Debt index weights and market impact

Weights are also being revised in the Nifty Fixed Income PRC indices. In the Nifty Ultra Short Duration Debt Index A-I, the weight of the Nifty 3 Month CD Index - A will increase from 25.91% to 43.62%, while the weight of the Nifty 6 Month CD Index - A will decrease from 49.46% to 33.48%. The weight of the Nifty 3 Month CP Index - A will change from 3.20% to 3.05%, and that of the Nifty 6 Month CP Index - A from 5.99% to 4.19%.

In the same index, the weights of the Nifty 182 Day T-Bill Index and Nifty 91 Day T-Bill Index will remain unchanged at 5.00%, while the weight of the Nifty AAA Ultra Short Duration Bond Index will increase from 5.44% to 5.65%. In the Nifty Low Duration Debt Index A-I, the weight of the Nifty 1 Year CD Index - A will decrease from 6.61% to 3.98%, while the weight of the Nifty 1 Year CP Index - A will increase from 1.16% to 2.14%.

These changes matter for investment products that track Nifty fixed income benchmarks, as revisions to index constituents and weights affect portfolio allocation, rebalancing activity, and tracking strategies. NSE Indices Limited, a subsidiary of NSE, manages equity, government securities, corporate bond, money market, and hybrid indices under the Nifty brand.

Our previous report noted that NSE and SEBI were focusing on promoting financial literacy, investor protection, and safe and responsible investing through the ‘Samajh Se Investing Simple’ campaign as part of World Investor Week 2026 . It mentioned Project Jagrook, large-scale investor awareness programmes across the country, verification tools, and measures to prevent fraud—all of which help new and experienced investors make informed decisions.

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