Replies to post #537 on IDM Pharma, Inc. (IDMI)

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Institutional holdings for Q3-2007 has been updated and corrected on www.nasdaq.com for IDMI, as of 11/15/07.

25 million shares out standing.
5.5M shares held by institutions. 21.9% of out standing shares.
1.7M new positions in Q3.
1.9M increased positions.
420K decreased positions.
184K sold out.

Palo Alto 2.176M shares, no change in Q3, IDMI largest share holder;
Stark Offshore 569K no change in Q3;
Highbridge -389K, still holds 443K;
Weisel Thomas 297K, no change in Q3;
Dimensional Fund added 134K, for 242K total, +124%;
Credit Agricole SA 133K, no change;
Millennium 64K, new;
Two Sigma Investment 63.7K, new;
Northern Trust 22K, new;
JP Morgan 21K, new;
Bear Stearns 10K, +2.5K;

Dafna Capital -215K, still holding 341K shares;
Credit suisse -51K sold out;
Ramius Capital -165K, sold out in Q3.

Triathlon Fund, (556K), IDMI's third largest share holder has not yet reported Q3 positions.