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Institutional Holdings of RIVERBED TECHNOLOGY, INC. (RVBD) on 12/31/2009

1. Company Information

Company/StockRIVERBED TECHNOLOGY, INC. (stock symbol: RVBD)
Funds Ownership185 out of total 2720 funds (7%) own this stock
Funds own total 60,007,804 shares, 86.72% of all outstanding shares
Funds SOLD -2,062,488 shares (-3.32%) in the quarter ended on 12/31/2009

2. Top 20 Funds Held RVBD in this Quarter (By Shares)

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)FMR LLC7,599,500Cut -6.61%0.04%10.98%
2.)WELLINGTON MANAGEMENT CO LLP5,436,472Added 3.34%0.05%7.86%
3.)RCM CAPITAL MANAGEMENT LLC2,988,836Cut -19.83%0.44%4.32%
4.)WADDELL & REED FINANCIAL INC2,463,296Added 1.13%0.19%3.56%
5.)VANGUARD GROUP INC2,298,627Added 4.11%0.01%3.32%
6.)WELLS FARGO & CO MN2,074,549Added 29.54%0.04%3.00%
7.)RAINIER INVESTMENT MANAGEMENT INC 1,672,980Added 64.56%0.23%2.42%
8.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,539,246New0.01%2.22%
9.)BLACKROCK FUND ADVISORS1,425,317New0.02%2.06%
10.)AXA1,393,517Cut -2.32%0.02%2.01%
11.)NEXT CENTURY GROWTH INVESTORS LLC1,346,660Added 11.20%1.38%1.95%
12.)WASATCH ADVISORS INC1,262,917Added 37.81%0.57%1.83%
13.)STATE STREET CORP1,253,944Added 11.21%0.01%1.81%
14.)PRICE T ROWE ASSOCIATES INC MD 1,189,000Added 17.42%0.01%1.72%
15.)TYGH CAPITAL MANAGEMENT INC983,620New0.84%1.42%
16.)LORD ABBETT & CO LLC961,506Added 26.79%0.05%1.39%
17.)CORTINA ASSET MANAGEMENT LLC781,273Added 4.59%1.47%1.13%
18.)BANK OF NEW YORK MELLON CORP772,489Added 2.06%0.01%1.12%
19.)DELAWARE MANAGEMENT BUSINESS TRUST769,450Added 27.63%0.07%1.11%
20.)MAZAMA CAPITAL MANAGEMENT INC745,325New1.71%1.08%

3. Top 20 Funds Held RVBD in this Quarter (By % of Fund Reported Portfolio)

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)CROSSLINK CAPITAL INC642,608Cut -3.10%2.48%0.93%
2.)CONTRAVISORY RESEARCH & MANAGEMENT CORP355,550New2.48%0.51%
3.)NORRIS PERNE & FRENCH LLP MI198,625Added 36.36%1.80%0.29%
4.)MAZAMA CAPITAL MANAGEMENT INC745,325New1.71%1.08%
5.)CHRISTIE STREET CAPITAL MANAGEMENT LP28,161New1.51%0.04%
6.)CORTINA ASSET MANAGEMENT LLC781,273Added 4.59%1.47%1.13%
7.)NEXT CENTURY GROWTH INVESTORS LLC1,346,660Added 11.20%1.38%1.95%
8.)EMPIRE CAPITAL MANAGEMENT LLC416,800CALLNew1.27%0.60%
9.)ELLIOTT MANAGEMENT CORP475,000Cut -5.00%1.07%0.69%
10.)AH LISANTI CAPITAL GROWTH LLC70,335Added 32.28%1.00%0.10%
11.)LOCH CAPITAL MANAGEMENT LLC209,800New0.93%0.30%
12.)GANNETT WELSH & KOTLER364,970Added 8.06%0.92%0.53%
13.)THOMSON HORSTMANN & BRYANT INC692,150Added 62.92%0.89%1.00%
14.)TYGH CAPITAL MANAGEMENT INC983,620New0.84%1.42%
15.)PROVIDENT INVESTMENT COUNSEL189,313Cut -27.31%0.81%0.27%
16.)PLATTE RIVER CAPITAL LLC295,690Added 25.24%0.81%0.43%
17.)STEPHENS INVESTMENT MANAGEMENT GROUP LLC164,885Added 40.18%0.71%0.24%
18.)BRIGHTFIELD CAPITAL MANAGEMENT LLC25,100New0.71%0.04%
19.)GRANAHAN INVESTMENT MANAGEMENT INC MA699,940Cut -35.08%0.65%1.01%
20.)EMERALD MUTUAL FUND ADVISERS TRUST102,843Added 39.86%0.64%0.15%

4. Top 20 Funds BOUGHT NEW RVBD in this Quarter (By Shares)

No.FundSharesPut/Call% Port.% Out. Shrs
1.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,539,2460.01%2.22%
2.)BLACKROCK FUND ADVISORS1,425,3170.02%2.06%
3.)TYGH CAPITAL MANAGEMENT INC983,6200.84%1.42%
4.)MAZAMA CAPITAL MANAGEMENT INC745,3251.71%1.08%
5.)ROYAL BANK OF CANADA 528,5770.01%0.76%
6.)PRUDENTIAL FINANCIAL INC486,1300.03%0.70%
7.)EMPIRE CAPITAL MANAGEMENT LLC416,800CALL1.27%0.60%
8.)HIGHBRIDGE CAPITAL MANAGEMENT LLC380,0720.08%0.55%
9.)CONTRAVISORY RESEARCH & MANAGEMENT CORP355,5502.48%0.51%
10.)GLG PARTNERS INC300,000PUT0.17%0.43%
11.)LOCH CAPITAL MANAGEMENT LLC209,8000.93%0.30%
12.)SENTINEL ASSET MANAGEMENT INC175,0000.10%0.25%
13.)CITADEL ADVISORS LLC128,900PUT0.01%0.19%
14.)CITADEL ADVISORS LLC126,400CALL0.01%0.18%
15.)CITADEL ADVISORS LLC113,1720.01%0.16%
16.)SSI INVESTMENT MANAGEMENT INC105,5150.21%0.15%
17.)PECONIC PARTNERS LLC100,0000.23%0.14%
18.)EMPIRE CAPITAL MANAGEMENT LLC98,5000.30%0.14%
19.)SYMMETRY PEAK MANAGEMENT LLC90,7030.60%0.13%
20.)ROC CAPITAL MANAGEMENT LP79,5000.43%0.11%

5. Top 20 Funds SOLD OUT RVBD in this Quarter (By Shares)

No.FundSharesPut/Call% Port.% Out. Shrs
1.)BARCLAYS GLOBAL INVESTORS UK HOLDINGS LTD2,813,4610.01%4.07%
2.)CARLSON CAPITAL L P661,7480.39%0.96%
3.)7X7 ASSET MANAGEMENT LLC525,0002.00%0.76%
4.)VOYAGEUR ASSET MANAGEMENT INC483,1320.41%0.70%
5.)JENNISON ASSOCIATES LLC403,8760.02%0.58%
6.)RANGER INVESTMENT MANAGEMENT LP383,8251.00%0.55%
7.)POLAR CAPITAL LLP309,8301.37%0.45%
8.)ALGER FRED MANAGEMENT INC220,9850.05%0.32%
9.)CITADEL L P192,700PUT0.01%0.28%
10.)CITADEL L P171,4590.01%0.25%
11.)MOORE CAPITAL MANAGEMENT LLC150,0000.11%0.22%
12.)LABRANCHE & CO INC144,7810.10%0.21%
13.)PEAK6 INVESTMENTS LP140,700PUT0.02%0.20%
14.)CITADEL L P116,400CALL0.01%0.17%
15.)INTREPID CAPITAL MANAGEMENT INC DE 110,0001.40%0.16%
16.)CUPPS CAPITAL MANAGEMENT LLC108,7470.76%0.16%
17.)PEAK6 INVESTMENTS LP108,400CALL0.02%0.16%
18.)CAPITAL FUND MANAGEMENT SA106,000PUT0.05%0.15%
19.)CAVALRY ASSET MANAGEMENT LP100,0000.22%0.14%
20.)SIGMA CAPITAL MANAGEMENT LLC100,0000.08%0.14%