The ResearchTeam has changed its rating on Compania de Minas Buenaventura SA (BVN) 10 times in the past 21 months, with the direction of the rating changes being correct only 4 times, resulting in a 40% rating accuracy. In this report, ResearchTeam reiterates its Reduce rating on BVN stock, which is currently trading at $39.66, down 0.5% since the previous rating 18 days ago. The performance of following ResearchTeam's ratings on BVN has significantly underperformed the S&P 500 total return index over the past 1 month, 3 months, 1 year and since January 2008.

1. Compania de Minas Buenaventura
SA, US BVN NYSE Report created on 5/06/11
Current Rating Last Close Price Rating Reiterated on 5/06/11 Rating Accuracy
Overview $39.66 REDUCE Rating History & Rating Accuracy ?
40.0%
About the Current Rating This team has changed its rating for BVN 10 times over the past 21 months. The direction for each team rating was correct for 4 of the 10 ratings at
the end of each rating period, resulting in a rating accuracy of 40.0% and a TTM rating accuracy of 50.0%.
Downgraded 18 Days 0.5%
Reduce
Reduce
Reduce
Reduce
Reduce
Hold
Hold
Hold
Hold
Hold
at Current % Change since
Ratings
from Hold
Rating Current Rating Issued
Team Member's Rating Information CORRECT RATINGS
Accuracy
Rating Upgrade/ Rating
Date Downgrade Rating Reiterated INCORRECT RATINGS
Ford Equity Research 4/13/11 Hold 4/27/11
Jaywalk 3/04/11 Hold 5/02/11 $60
The Street.com 8/20/09 Buy 5/01/11
Market Edge 4/18/11 Avoid 4/29/11
ResearchTeam 4/18/11 Reduce 5/06/11
50
BVN
$39.66
40
ResearchTeam Rating Performance (%) ?
Performance of the 20% S&P 500 TR
ResearchTeam rating
is calculated as if this 30
stock was purchased
when the team had
an Accumulate or 0 1 2 3 4 5 6 7 8 9 10
Hold rating, and sold SEP OCT JAN APR JUL OCT JAN APR
short when the team 2009 2010 2011
had a Reduce rating.
-20 BVN Over Rating Period
Upgrade or Price ($) on # of Days at Rating Total % Change Underperform/
Date of Rating Rating Downgrade Rating Date This Rating Accuracy Return in Benchmark Outperform Index
10 4/18/11 Reduce 39.47 18 Incorrect 0.5 2.7 Underperform
-40 9 2/22/11 Hold 46.17 55 Incorrect -13.9 0.7 Underperform
Since 8 12/20/10 Reduce 48.54 64 Correct -4.9 4.5 Underperform
1 Month 3 Month 1 Year 1/1/2008 7 9/22/10 Hold 41.76 89 Correct 16.6 12.1 Outperform
ResearchTeam for BVN -11.9 -23.2 3.3 -27.5 6 8/23/10 Reduce 37.89 30 Incorrect 10.2 7.1 Outperform
Accumulate Ratings -- -- -- -- 5 4/12/10 Hold 32.90 133 Correct 15.2 -11.5 Outperform
Hold Ratings -6.7 -13.9 15.7 5.9 4 3/29/10 Reduce 30.71 14 Incorrect 8.1 2.1 Outperform
Reduce Ratings -5.6 -10.9 -10.7 -31.5
3 3/01/10 Hold 34.83 28 Incorrect -11.8 5.1 Underperform
BVN -1.5 -4.5 28.1 39.3
2 12/21/09 Reduce 31.85 70 Incorrect 9.4 0.4 Outperform
S&P 500 Total Return Index 2.5 4.8 17.2 0.0
1 8/10/09 Hold 25.48 133 Correct 25.5 13.3 Outperform
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