Renaissance Technologies's MBB Position Overview
Renaissance Technologies (via Renaissance Technologies LLC) currently holds 8,386 shares of iShares MBS ETF (MBB) worth $798,515, representing 0.00% of the portfolio. First purchased in 2018-Q1, this medium-term investment has been held for 18 quarters.
Based on 13F filings, Renaissance Technologies has maintained a strategic position in MBB, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2022, adding 161,000 shares. Largest reduction occurred in Q1 2021, reducing 163,805 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies's iShares MBS ETF (MBB) Holding Value Over Time
Track share changes against reported price movement
Quarterly iShares MBS ETF (MBB) Trades by Renaissance Technologies
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2018 | +21,268 | New Buy | 21,268 | $104.62 |
| Q2 2018 | -11,468 | Reduce 53.92% | 9,800 | $104.18 |
| Q3 2018 | -9,800 | Sold Out | 0 | $0.00 |
| Q2 2019 | +92,600 | New Buy | 92,600 | $107.60 |
| Q3 2019 | -20,272 | Reduce 21.89% | 72,328 | $108.30 |
| Q4 2019 | +37,517 | Add 51.87% | 109,845 | $108.06 |
| Q1 2020 | -71,845 | Reduce 65.41% | 38,000 | $110.45 |
| Q2 2020 | +21,100 | Add 55.53% | 59,100 | $110.69 |
| Q3 2020 | +62,000 | Add 104.91% | 121,100 | $110.40 |
| Q4 2020 | +42,705 | Add 35.26% | 163,805 | $110.13 |
| Q1 2021 | -163,805 | Sold Out | 0 | $0.00 |
| Q2 2021 | +15,014 | New Buy | 15,014 | $108.23 |
| Q3 2021 | -15,014 | Sold Out | 0 | $0.00 |
| Q2 2022 | +161,000 | New Buy | 161,000 | $97.49 |
| Q3 2022 | -161,000 | Sold Out | 0 | $0.00 |
| Q4 2022 | +43,900 | New Buy | 43,900 | $0.09 |
| Q1 2023 | -43,900 | Sold Out | 0 | $0.00 |
| Q4 2025 | +8,386 | New Buy | 8,386 | $95.22 |
Renaissance Technologies's iShares MBS ETF Investment FAQs
Renaissance Technologies first purchased iShares MBS ETF (MBB) in Q1 2018, acquiring 21,268 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies has held iShares MBS ETF (MBB) for 18 quarters since Q1 2018.
Renaissance Technologies's largest addition to iShares MBS ETF (MBB) was in Q2 2022, adding 161,000 shares worth $15.7 M.
According to the latest 13F filing for Q4 2025, Renaissance Technologies's firm, Renaissance Technologies LLC, owns 8,386 shares of iShares MBS ETF (MBB), valued at approximately $798,515.
As of the Q4 2025 filing, iShares MBS ETF (MBB) represents approximately 0.00% of Renaissance Technologies's publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies's peak holding in iShares MBS ETF (MBB) was 163,805 shares, as reported at the end of Q4 2020.