Guggenheim Funds

CLAYMORE/GUGGENHEIM INTERMEDIATE INVESTMENT-GRADE CORPORATE TRUST Series 18

PRICE HISTORY

DATE OFFER PRICE BID PRICE LIQUIDATION PRICE
5/23/12 $0.00 $999.10 $999.10
5/22/12 $0.00 $997.85 $997.85
5/21/12 $0.00 $999.74 $999.74
5/18/12 $0.00 $1,002.58 $1,002.58
5/17/12 $0.00 $1,005.97 $1,005.97
5/16/12 $0.00 $1,006.49 $1,006.49
5/15/12 $0.00 $1,008.65 $1,008.65
5/14/12 $0.00 $1,008.95 $1,008.95
5/11/12 $0.00 $1,007.10 $1,007.10
5/10/12 $0.00 $1,005.39 $1,005.39
5/9/12 $0.00 $1,006.88 $1,006.88
5/8/12 $0.00 $1,007.71 $1,007.71
5/7/12 $0.00 $1,006.52 $1,006.52
5/4/12 $0.00 $1,007.29 $1,007.29
5/3/12 $0.00 $1,005.22 $1,005.22
5/2/12 $0.00 $1,005.47 $1,005.47
5/1/12 $0.00 $1,003.09 $1,003.09
4/30/12 $0.00 $1,003.99 $1,003.99
4/27/12 $0.00 $1,003.11 $1,003.11
4/26/12 $0.00 $1,002.07 $1,002.07
4/25/12 $0.00 $1,000.41 $1,000.41
Past performance does not guarantee future results.

DISTRIBUTION HISTORY

Export
EX-DIVIDEND DATE RECORD DATE PAYABLE DATE PRINCIPAL DISTRIBUTION INCOME/INTEREST DISTRIBUTION TOTAL DISTRIBUTION
5/11/12 5/15/12 5/25/12 $0.00000 $4.54000 $4.54000
4/11/12 4/13/12 4/25/12 $0.00000 $4.55000 $4.55000
3/13/12 3/15/12 3/26/12 $0.00000 $4.54000 $4.54000
2/13/12 2/15/12 2/27/12 $0.00000 $4.54000 $4.54000
1/11/12 1/13/12 1/25/12 $0.00000 $4.55000 $4.55000
12/15/11 12/19/11 12/28/11 $18.22000 $0.00000 $18.22000
12/13/11 12/15/11 12/27/11 $0.00000 $4.60000 $4.60000
11/11/11 11/15/11 11/25/11 $0.00000 $4.61000 $4.61000
10/12/11 10/14/11 10/25/11 $0.00000 $4.60000 $4.60000
9/13/11 9/15/11 9/26/11 $0.00000 $4.64000 $4.64000
8/11/11 8/15/11 8/25/11 $0.00000 $4.64000 $4.64000
7/13/11 7/15/11 7/25/11 $0.00000 $4.64000 $4.64000
6/13/11 6/15/11 6/27/11 $0.00000 $4.63000 $4.63000
5/11/11 5/13/11 5/25/11 $0.00000 $4.65000 $4.65000
4/13/11 4/15/11 4/25/11 $0.00000 $4.65000 $4.65000
3/11/11 3/15/11 3/25/11 $0.00000 $4.63000 $4.63000
2/11/11 2/15/11 2/25/11 $0.00000 $4.65000 $4.65000
1/12/11 1/14/11 1/25/11 $0.00000 $4.66000 $4.66000
12/13/10 12/15/10 12/27/10 $0.00000 $4.66000 $4.66000
11/11/10 11/15/10 11/26/10 $0.00000 $4.70000 $4.70000
10/13/10 10/15/10 10/25/10 $0.00000 $4.73000 $4.73000
9/13/10 9/15/10 9/27/10 $0.00000 $4.79000 $4.79000
8/11/10 8/13/10 8/25/10 $0.00000 $4.83000 $4.83000
7/13/10 7/15/10 7/26/10 $0.00000 $4.85000 $4.85000
6/11/10 6/15/10 6/25/10 $0.00000 $4.86000 $4.86000
5/12/10 5/14/10 5/25/10 $0.00000 $4.84000 $4.84000
4/13/10 4/15/10 4/26/10 $0.00000 $5.65000 $5.65000

ANNUAL TOTAL DISTRIBUTION*

2012 YTD $22.72000
2011 $73.82000
2010 $43.91000
Total $140.45000

*Can be comprised of both principal and income/interest distributions.

Investors should carefully consider the investment objectives and policies, risk considerations, charges and ongoing expenses of any investment product before investing. The prospectus contains this and other relevant information. Please read the prospectus carefully before you invest. To obtain a prospectus, please contact a securities representative or Guggenheim Funds Distributors, LLC, 2455 Corporate West Drive, Lisle, Illinois 60532, 800-345-7999, or download one by accessing the Literature section of this website.

NOT FDIC INSURED | NOT BANK GUARANTEED | MAY LOSE VALUE