Funny!!
Here is a homework since you seem have nothing to do..
In late 2012 and early 2013, Lehman received approximately 14.9 million shares of AVB as part of the consideration for the sale of Archstone assets, translating to a roughly 13.2% ownership stake in AVB.
Since the May 2013 filings, Lehman Brothers’ ownership percentage in AVB has remained relatively stable near 10%, with no new significant Schedule 13D or 13G amendments adding or reducing the stake materially.
Official periodic 13F filings continue to confirm this steady ownership position through 2025, showing about 10.5% ownership with approximately 14.9 million shares, indicating minor fluctuations but no dramatic changes in block size.