# ISHARES TR (MBB) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 464288588
Page URL: https://superinvestorclub.com/stock/MBB
Last updated: 2026-07-08T13:36:49.922Z

## Summary

As of the most recent 13F filing period, ISHARES TR (MBB) is held by 1 tracked superinvestors with an aggregate position value of $129.1M representing 01360000 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 1360000 | $129.1M | 0.58% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-03-31: 1 holders, $136.6M aggregate, 01478500 shares
- 2024-06-30: 1 holders, $133.5M aggregate, 01454200 shares
- 2024-09-30: 1 holders, $135.7M aggregate, 01416200 shares
- 2024-12-31: 1 holders, $131.5M aggregate, 01434700 shares
- 2025-03-31: 1 holders, $135.8M aggregate, 01447600 shares
- 2025-06-30: 1 holders, $137.1M aggregate, 01460200 shares
- 2025-09-30: 2 holders, $129.2M aggregate, 013551002343 shares
- 2025-12-31: 1 holders, $131.0M aggregate, 01375400 shares
- 2026-03-31: 1 holders, $129.1M aggregate, 01360000 shares

## Recent congressional trades (3)

- 2026-01-23: John Boozman (Republican-AR) purchase $1,001 - $15,000
- 2025-11-21: John Boozman (Republican-AR) purchase $1,001 - $15,000
- 2025-08-01: John Boozman (Republican-AR) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "ISHARES TR (MBB) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/MBB), aggregating SEC 13F, Form 4, and congressional disclosures."