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methodology-explainer13 Sep 2026

What an RBI open market operation does to liquidity and yields

The RBI is draining Rs 1 lakh crore via open market operations. Here is what that does to bond yields, and to a portfolio priced partly in dollars.

RudraResearch note 8 min read
A raised charcoal neumorphic console with two levers, one pulled fully down and glowing orange, the other resting untouched, illustrating the RBI draining Rs 1 lakh crore of liquidity through open market operations while its other tool sat unused

The point

The Reserve Bank of India is selling Rs 1 lakh crore of government bonds. The sale runs in three tranches, on 17, 21 and 28 September 2026. It follows two cash-draining auctions that came up short (Business Standard, 11 September 2026). An open market operation moves money in and out of the banking system without touching the policy rate. This one is aimed straight at a bond market where yields were already climbing before the sale was announced.

What an open market operation is, and who runs it

An open market operation is the RBI buying or selling government securities already in the market. It changes how much cash sits inside the banking system. It is a separate lever from the repo rate. The repo rate sets the price of money. An OMO changes the quantity of it instead. The RBI conducts every such sale or purchase itself, using government bonds banks already hold or want.

The RBI draws a distinction between two kinds of surplus cash, reported by Business Standard on 11 September 2026. A variable rate reverse repo auction, VRRR, absorbs money that returns within days or weeks. An OMO sale absorbs durable liquidity, cash that would otherwise sit in the system for months. That distinction is why the RBI reached for a bond sale here, instead of a third VRRR round.

A sale against a purchase, and what each does to bank cash and bond prices

An OMO purchase and an OMO sale do opposite things to bank cash and bond prices. When the RBI buys bonds from banks, it pays them cash. That adds to the cash sitting in the banking system. The RBI's own buying also adds demand for those bonds. Extra demand pushes their price up and their yield down. A bond's yield and its price move in opposite directions by construction. Pay more for the same fixed coupon, and the return that price buys goes down.

An OMO sale runs the arithmetic the other way. Banks pay the RBI cash to buy the bonds it is selling. Cash leaves the banking system into the RBI's hands. The RBI is also adding Rs 1 lakh crore of bonds to what the market has to absorb. That extra supply needs a lower price to clear, unless buyers want exactly that many bonds at the old price. A lower price on the same fixed coupon means a higher yield. Selling bonds drains cash and pushes yields up in the same motion.

Why the RBI is selling now

The surplus it is draining

The net liquidity surplus in the banking system stood at Rs 10.43 lakh crore as of Thursday, 10 September 2026. The core surplus was estimated at Rs 13 lakh crore to Rs 14 lakh crore (Business Standard, 11 September 2026). RBI governor Sanjay Malhotra traced most of it to $127 billion mobilised through FCNR(B) deposits. Those are foreign currency accounts NRIs hold with Indian banks. The money came in through a concessional swap window that converted those dollars into rupees inside the system.

Surplus cash pulls down the overnight weighted average call rate, WACR. WACR is the rate banks charge each other for overnight cash, and the RBI's actual operating target. It settled at 5.02 percent on 11 September 2026, up from 4.98 percent on 10 September 2026, against a repo rate of 5.25 percent (Business Standard, 11 September 2026). The wider that gap runs, the weaker the RBI's own policy rate transmits through the rest of the system.

Two tools already tried

The RBI did not reach for a bond sale first. On Friday, 11 September 2026, it ran a 26-day VRRR auction. That auction drew bids of Rs 60,449 crore against a notified amount of Rs 5 lakh crore. A separate 4-day VRRR auction drew Rs 3.44 lakh crore against the same Rs 5 lakh crore notified (Business Standard, 11 September 2026). Both auctions took in a fraction of what the RBI put up for bid, the second muted VRRR round in a row. Malhotra, in a television interview cited in the same report, said the RBI has enough tools, naming OMOs and currency swaps. He added that VRRR may not be of much help for durable cash. The OMO sale followed within hours of that interview.

What the sale did to yields, and what a yield does to a rupee-and-dollar portfolio

The benchmark 10-year government bond yield settled at 7.01 percent on 11 September 2026, up 5 basis points on the day. That crossed 7 percent for the first time since 3 June 2026 (Business Standard, 11 September 2026). The move sat inside a wider selloff. US Treasury yields were climbing in the same session, on rising bets for an American rate move. Brent crude traded above $108 a barrel, as an escalating Middle East conflict pushed energy prices up (Business Recorder, 11 September 2026). A trader with a primary dealership summed it up to Reuters, quoted in that report: "This is not only an India problem, we are witnessing a global bond meltdown."

On 11 September 2026, a second move followed. The rupee settled at 95.54 to the dollar, down 2 paise from the previous close of 95.52 (PTI, via ThePrint, 11 September 2026). The same crude oil and global bond moves pressured it. That matters to anyone holding a dollar-priced asset, for a reason that has nothing to do with what the asset itself does. The rupee value of a dollar-denominated holding is the dollar price multiplied by the exchange rate. The rate can move that rupee value on its own. Take a position worth Rs 5 lakh in a crypto index, its dollar value unchanged over the day. The rupee moved from 95.52 to 95.54 to the dollar. That same dollar value converts to roughly Rs 5,00,105 in rupee terms, about Rs 105 more. The arithmetic: Rs 5,00,000 multiplied by 95.54, divided by 95.52. That is currency arithmetic. The asset's own dollar price did not move at all for that number to shift.

What the equity and bond market has that crypto does not

A week like this one runs on a central bank actively managing how much cash sits inside its own currency's system. Government bonds, bank deposits and the rupee itself sit inside that managed system. Crypto sits outside it. No OMO exists for a crypto index, and no repo rate anchors its funding cost. Nothing stands ready to add or drain its cash the way the RBI just did for rupee liquidity. That is a structural fact about where each asset class sits. It carries no judgement on either one.

What a monthly SIP does with any of this

A Qatobit Crypto Index is designed and rebalanced on a published methodology, on a monthly schedule. That schedule runs regardless of what the RBI's own liquidity operations do to bond yields in a given month. The methodology decides what a basket holds. The schedule carries the discipline. Someone running a Crypto SIP into a QSI index is not asked to have a view on the 10-year yield. It makes no difference where that yield settles. The rebalance happens on the same calendar date it always does.

Two pieces worth reading alongside this one. What a US CPI print does to the rupee price of your crypto walks through the same rupee-and-dollar arithmetic, from a different trigger. Why the rupee is falling, and what it does to your crypto goes further into what moves the exchange rate itself. For the mechanics of the basket this piece keeps returning to, what a crypto index actually is and how it works covers the construction.

An open market operation is the RBI's own lever, pulled on the RBI's own schedule, over tools that came up short first. What it does to a bond yield is arithmetic. What that yield does to a rupee, and what a rupee does to a dollar-priced holding, is arithmetic too. None of it changes what a monthly allocation decides to hold.

Frequently asked questions

What is an open market operation?

An open market operation is the Reserve Bank of India buying or selling government securities already in the market. It adds or removes cash from the banking system, without changing the RBI's own policy rate. A purchase adds cash and tends to lower bond yields. A sale removes cash and tends to raise them.

What is the difference between an OMO sale and a VRRR auction?

Both pull surplus cash out of the banking system. A variable rate reverse repo auction absorbs money that flows back within days or weeks. An OMO sale absorbs durable liquidity, cash that would otherwise sit in the system for months. The RBI turned to a Rs 1 lakh crore OMO sale in September 2026 after two VRRR auctions drew far less in bids than the amount on offer.

Why is the RBI selling Rs 1 lakh crore in bonds now?

The banking system was carrying a net liquidity surplus of Rs 10.43 lakh crore as of 10 September 2026, traced largely to $127 billion mobilised through FCNR(B) deposits. Two VRRR auctions failed to absorb enough of it. The RBI turned to a bond sale in three tranches instead, on 17, 21 and 28 September, to drain the surplus directly.

Does a rising bond yield affect a crypto index?

Not through the index's own construction. A QSI index is designed and rebalanced on a published methodology, on a fixed monthly schedule. That schedule does not change with what a government bond yield does in a given month. A rising yield can matter to a rupee-and-dollar-priced holding only through the exchange rate itself, which is separate arithmetic from what the index holds.

Does an RBI liquidity operation change a Crypto SIP?

No. A Crypto SIP invests a set amount on a set cadence, into a chosen asset or index. That cadence runs on its own calendar. An RBI bond sale, a yield crossing 7 percent or a rupee close is not an input the SIP schedule reacts to.

Crypto investments are subject to market risk. Not financial advice.

“A better allocation begins with a better explanation.”

Qatobit principle

Published construction. Fixed cadence. Versioned control.