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G-Sec Liquidity Ladder

Holds the most actively traded government securities — the benchmark on-the-run issues that account for most NDS-OM volume — equally weighted and rebalanced quarterly. A sovereign-credit-risk-free core with genuine daily liquidity.

Why this is expected to work

Indian G-Secs are not one market, they are two. A handful of benchmark issues — currently the 10-year, and whichever securities are on-the-run at other tenors — trade every single day in size on NDS-OM, while the several hundred other outstanding securities may not print for weeks. The liquidity is concentrated because the benchmark is what dealers hedge with, and it rotates as new issues are auctioned. Selecting on realised trading activity rather than on tenor or coupon is therefore the only construction that stays tradeable as the benchmark rolls: it tracks where the liquidity actually went instead of assuming where it should be. Quarterly rebalancing matches how slowly the on-the-run set turns over, and the holding carries sovereign credit risk (effectively nil) with pure duration risk, which is the honest description of what a G-Sec portfolio is exposed to.

bondsgsecgovernmentduration
Universe
Indian Bonds (NSE debt segment + G-Sec) XOTC
Rebalance
Quarterly Equal weighted

How the pipeline works

Filter

Sovereign or near-sovereign

Keeps rows where spread_over_gsec < 100

spread_over_gsec < 100
Filter

Priced by a real trade today

Keeps rows where price_is_traded == 1

price_is_traded == 1
Filter

At least 2 years to run

Keeps rows where time_to_maturity_years > 2

time_to_maturity_years > 2
Calculate

60-day average traded value

Computes avg_turnover_60 = @SMA(bond_turnover, 60)

@SMA(bond_turnover, 60)
Rank

10 most liquid issues

Selects the top 10 by avg_turnover_60

What this template teaches

  • Bonds as ordinary securities on the standard price path
  • Selecting on realised liquidity rather than a static attribute
  • Low-turnover schedules for instruments that do not trade daily
Read the full write-up

G-Secs Are Two Markets, and Only One of Them Is Liquid

A handful of benchmark government securities trade every day in size. The several hundred others may not print for weeks. Any systematic G-Sec strategy has to select on realised liquidity, not on tenor.