2001年-ECB欧洲央行_Bidding_behaviour_of_counterparties_in_the_Eurosystems_regular_open_market_operations_13页_201kb

Summary of Bidding Behaviour of Counterparties in the Eurosystem's Regular Open Market Operations

Core Content

The article examines the bidding behaviour of counterparties in the Eurosystem's regular open market operations (OMOs), particularly focusing on the weekly main refinancing operations (MROs) from January 1999 to mid-June 2001. It compares fixed rate and variable rate tenders, highlighting the role of the spread between short-term money market rates and the tender rate in influencing bid amounts and rates.

The Eurosystem conducted 127 MROs and 31 LTROs during the period, with an average allotment volume of €80 billion for MROs and €18 billion for LTROs. The study emphasizes the market-oriented and highly efficient nature of these operations in allocating central bank liquidity to the banking system.

Main Features of Bidding Behaviour

Fixed Rate Tenders

• Conducted from January 1999 to 20 June 2000.
• Counterparties submitted bids only at the pre-announced fixed tender rate.
• The total bid amount was mainly influenced by the spread between the short-term money market rates and the fixed tender rate.
• The bid amount peaked in June 2000 at €8,491 billion, far exceeding the liquidity needs.
• The allotment ratio (allotment amount divided by bid amount) decreased over time, reaching below 1% in May 2000.
• The concentration of bids and allotments was measured by the share of the 3, 10, and 30 largest bidders. On average, the top 3 received 11%, the top 10 received 27%, and the top 30 received 52% of the total liquidity.
• The large bidders reduced their share of bids during the interest rate cut in April 1999, but increased again after the rate cut and during the transition to variable rate tenders.

Variable Rate Tenders

• Introduced on 23 July 2000, following a decision by the ECB Governing Council to address overbidding in fixed rate tenders.
• Counterparties could submit bids at various interest rates, with the minimum bid rate serving as a benchmark.
• The marginal and average rates of allotment were significantly influenced by the spread between the short-term money market rates and the minimum bid rate.
• The bid curves, which illustrate the distribution of bids across different rates, were used to analyze the dispersion and unevenness of bids.
• The bid-cover ratio, which measures the ratio of total bids to total allotments, decreased from around 2.5 in June 2000 to around 1.5 by the end of the period.

Key Observations

• Spread as a Key Factor: The spread between short-term money market rates and the tender rate (fixed or minimum bid rate) was a central determinant of bidding behaviour.
• Competitiveness: The bidding process was found to be highly competitive, with a sufficient degree of dispersion and a relatively low concentration of bids and allotments among large bidders.
• Underbidding Events: There were instances of underbidding, where the total bid amount was below the required level to meet reserve requirements. These events were associated with high uncertainty about the marginal rate and were more frequent during periods of expected interest rate decreases.
• Market Adaptation: Counterparties adapted quickly to the variable rate tender procedure, with relatively low dispersion and unevenness observed in the first tenders.
• Liquidity Conditions: The article notes that the ECB's liquidity supply decisions had to consider the balance of liquidity in the current and subsequent maintenance periods, especially after underbidding events.
• Bidding Trends: The number of bidders and total bid amounts declined in the second half of 2000 compared to the first half, and the bid-cover ratio also decreased, indicating a shift in market expectations and liquidity needs.

Conclusion

The study concludes that the Eurosystem's regular tender operations are a market-oriented and highly efficient mechanism for allocating central bank funds. The bidding process, whether fixed or variable rate, reflects the dynamic interplay between market expectations, liquidity needs, and the ECB's monetary policy stance. The competitive nature of the bidding is evident from the dispersion and concentration patterns observed, and the shift from fixed to variable rate tenders was a strategic response to market conditions and overbidding.