The portfolio of high-duration bonds minus low-duration bonds is then formed by computing the difference between the holding-period returns
of the basket of equally weighted high-duration bonds and the basket of equally weighted low-duration bonds.
We define the buy-and-hold abnormal return as the difference between the holding-period returns
of the sample and matched firms as
If investors want to find the arithmetic average annual return of a series of 1-year holding-period returns
they simply sum the 1-year holding-period returns
and divide by the number of years of returns.
12) Table 5 shows the various statistics of the three different holding-period returns
of the short-maturity straddles from this exercise.
Obviously, if people had perfect foresight about future short-term interest rates, holding-period returns
would necessarily be equalized through arbitrage.
The data for bonds are monthly holding-period returns
rather than daily returns in view of the fact that bonds tend to be much more thinly traded than common stocks, making their precise market value on any given day somewhat uncertain.
Previous chapters have shown a variety of return measures such as holding-period returns
and internal rates of return.
A-announcement return and T-announcement return are the excess holding-period returns
from day -2 to day 0 relative to the Wall Street Journal announcement date for the acquirer and the target, respectively.
In particular, three-year holding-period returns
, compounded monthly, are examined for acquiring firms and for industry-matched firms that did not make acquisitions during the period.
In all cases, we begin by computing the holding-period returns
for the sample SIPs and the time-period-matched returns on the local, world, and US market indexes.
Consistent with prior studies, we find that firms that issue new equity experience significant positive market-adjusted abnormal holding-period returns
for the 11-month period preceding the announcement, and significant negative abnormal holding-period returns
for the three-year period subsequent to the announcement date.
We study the relation between investment banker reputation and announcement-period returns and between banker reputation and three-year post-issue holding-period returns
for firms that conducted seasoned equity offerings (SEOs) between 1980 and 1994.