Query: Mutual fund value went down, shares went up, no action taken by me

Relevant passages:
 <=SEP=> You did something that you shouldn't have done; you bought a dividend.  Most mutual fund companies have educational materials on their sites that recommend against making new investments in mutual funds in the last two months of the year because most mutual funds distribute their earnings (dividends, capital gains etc) to their shareholders in December, and the share price of the funds goes down in the amount of the per share distribution. These distributions can be taken  in cash or can be re-invested in the fund; you most likely chose the latter  option (it is often the default choice if you ignored all this because you are a newbie). For those who choose to reinvest, the number of shares in the mutual fund increases, but since the price of the shares has decreased, the net amount remains the same. You own more shares at a lower price than the day before when the price was higher but the total value of your account is the same (ignoring normal market fluctuations in the price of the actual stocks held by the fund. Regardless of whether you take the distributions as cash or re-invest in the fund, that money is taxable income to you (unless the fund is owned inside a 401k or IRA or other tax-deferred investment program).  You bought 56 shares at a price of $17.857 per share (net cost $1000). The fund distributed its earnings shortly thereafter and gave you 71.333-56= 15.333 additional shares. The new share price is $14.11. So, the total value of your investment is $1012, but the amount that you have invested in the account is the original $1000 plus the amount of the distribution which is (roughly) $14.11 x 15.333 = $216.  Your total investment of $1216 is now worth $1012 only, and so you have actually lost money. Besides, you owe income tax on that $216 dividend that you received.  Do you see why the mutual fund companies recommend against making new investments late in the year?  If you had waited till after the mutual fund had made its distribution, you could have bought $1000/14.11 = 70.871 shares and wouldn't have owed tax on that distribution that you just bought by making the investment just before the distribution was made. See also my answer to this recent question about investing in mutual funds.

 <=SEP=> It is very likely that the fund paid out a dividend in the form of reinvested shares.  This happens with many funds, especially as we come to the end of the year. Here's a simplified example of how it works.  Assume you invested $1000 and bought 100 units at $10/unit.  Ignoring the daily price fluctuations, if the fund paid out a 20% dividend, you would get $200 and the unit price would drop to $8/unit.  Assuming you chose to reinvest your dividends, you would automatically purchase another $200 worth of units at the new price (so 25 more units).  You would now have 125 units @ $8/unit = $1000 invested. In your example, notice that you now have more shares than you originally purchased, but that the price dropped significantly.  Your market value is above what you originally invested, so there was probably also a bit of a price increase for the day.  You should see the dividend transaction listed somewhere in your account. Just to confirm, I did a quick search on ICENX and found that they did indeed pay a dividend yesterday.