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Upstream Bio, Inc. (UPB) Ownership Overview
8.63% Insiders
21.61% Mutual Funds
30.65% Other Institutional Investors
8.97% ETFs
30.14% Public Companies and
Individual Investors
The ownership structure of Upstream Bio, Inc. (UPB) stock is a mix of institutional, retail, and individual investors. Approximately 61.23% of the company’s stock is owned by Institutional Investors, 8.63% is owned by Insiders, and 30.14% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Jun 17, 2026 | xxxxxxxxxxxxx | $5203 | |
Jun 17, 2026 | xxxxxxxxxxxxx | $12780 | |
Jun 17, 2026 | xxxxxxxxxxxxx | $4270 | |
Jun 17, 2026 | xxxxxxxxxxxxx | $2910 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Mar 31, 2026 | xxxxxxxxxxxxx | $7483329 | |
Mar 31, 2026 | xxxxxxxxxxxxx | $662112 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 4,554,873 | Insider | 8.32% | 32,202,952 | |
| 3,030,790 | Institution | 5.53% | 21,427,685 | |
| 2,143,447 | Institution | 3.91% | 15,154,170 | |
| 1,826,490 | Institution | 3.33% | 12,913,284 | |
| 1,657,503 | Institution | 3.03% | 11,718,546 | |
| 1,326,293 | Institution | 2.42% | 9,376,892 | |
| 1,321,800 | Institution | 2.41% | 9,345,126 | |
| 1,091,003 | Institution | 1.99% | 7,713,391 | |
| 1,034,657 | Institution | 1.89% | 7,315,025 | |
| 831,481 | Institution | 1.52% | 5,878,571 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 3,030,790 | Institution | 5.53% | 21,427,685 | |
| 1,826,490 | Institution | 3.33% | 12,913,284 | |
| 1,321,800 | Institution | 2.41% | 9,345,126 | |
| 1,091,003 | Institution | 1.99% | 7,713,391 | |
| 1,034,657 | Institution | 1.89% | 7,315,025 | |
| 766,208 | Institution | 1.40% | 5,417,091 | |
| 713,594 | Institution | 1.30% | 5,045,110 | |
| 371,354 | Institution | 0.68% | 2,625,473 | |
| 341,675 | Institution | 0.62% | 2,415,642 | |
| 308,157 | Institution | 0.56% | 2,178,670 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 1,443,025 | Institution | 2.63% | 9,985,733 | |
| 911,043 | Institution | 1.66% | 6,441,074 | |
| 386,877 | Institution | 0.71% | 2,677,189 | |
| 335,939 | Institution | 0.61% | 2,375,089 | |
| 268,190 | Institution | 0.49% | 1,896,103 | |
| 202,528 | Institution | 0.37% | 1,401,494 | |
| 160,475 | Institution | 0.29% | 1,108,882 | |
| 150,504 | Institution | 0.27% | 1,039,983 | |
| 93,712 | Institution | 0.17% | 648,487 | |
| 87,375 | Institution | 0.16% | 603,761 |
FAQ
Who Owns Upstream Bio, Inc. (UPB)?
According to the latest TipRanks data, approximately 30.65% of the company's stock is held by institutional investors, 8.63% is held by insiders, and 30.14% is held by retail investors.
What percentage of Upstream Bio, Inc. (UPB) stock is held by institutional investors?
According to the latest TipRanks data, approximately 30.65% of Upstream Bio, Inc. (UPB) stock is held by institutional investors.
What percentage of Upstream Bio, Inc. (UPB) stock is held by retail investors?
According to the latest TipRanks data, approximately 30.14% of Upstream Bio, Inc. (UPB) stock is held by retail investors.
Who owns the most shares of Upstream Bio, Inc. (UPB)?
Erez Chimovits owns the most shares of Upstream Bio, Inc. (UPB).
What is the significance of the ownership structure for a publicly traded company?
The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.