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Upstream Bio, Inc. (UPB) Ownership Overview
8.62% Insiders
20.27% Mutual Funds
0.13% Other Institutional Investors
9.31% ETFs
61.66% Public Companies and
Individual Investors
The ownership structure of Upstream Bio, Inc. (UPB) stock is a mix of institutional, retail, and individual investors. Approximately 29.72% of the company’s stock is owned by Institutional Investors, 8.62% is owned by Insiders, and 61.66% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Sep 17, 2026 | xxxxxxxxxxxxx | $4683 | |
Sep 17, 2026 | xxxxxxxxxxxxx | $2663 | |
Sep 17, 2026 | xxxxxxxxxxxxx | $11502 | |
Sep 17, 2026 | xxxxxxxxxxxxx | $4914 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Jun 30, 2026 | xxxxxxxxxxxxx | $155755 | |
Jun 30, 2026 | xxxxxxxxxxxxx | $895766 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 4,554,873 | Insider | 8.32% | 14,894,435 | |
| 3,030,790 | Institution | 5.53% | 9,910,683 | |
| 2,265,099 | Institution | 4.14% | 7,406,874 | |
| 1,829,902 | Institution | 3.34% | 5,983,780 | |
| 1,701,673 | Institution | 3.11% | 5,564,471 | |
| 1,326,293 | Institution | 2.42% | 4,336,978 | |
| 1,321,800 | Institution | 2.41% | 4,322,286 | |
| 1,091,003 | Institution | 1.99% | 3,567,580 | |
| 1,034,657 | Institution | 1.89% | 3,383,328 | |
| 831,481 | Institution | 1.52% | 2,718,943 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 3,030,790 | Institution | 5.53% | 9,910,683 | |
| 1,829,902 | Institution | 3.34% | 5,983,780 | |
| 1,321,800 | Institution | 2.41% | 4,322,286 | |
| 1,091,003 | Institution | 1.99% | 3,567,580 | |
| 1,034,657 | Institution | 1.89% | 3,383,328 | |
| 736,222 | Institution | 1.34% | 2,407,446 | |
| 435,866 | Institution | 0.80% | 1,425,282 | |
| 336,260 | Institution | 0.61% | 1,099,570 | |
| 237,636 | Institution | 0.43% | 777,070 | |
| 234,635 | Institution | 0.43% | 767,256 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 1,443,025 | Institution | 2.63% | 7,604,742 | |
| 900,021 | Institution | 1.64% | 2,682,063 | |
| 469,481 | Institution | 0.86% | 2,474,165 | |
| 363,724 | Institution | 0.66% | 1,083,898 | |
| 283,734 | Institution | 0.52% | 927,810 | |
| 222,028 | Institution | 0.41% | 1,170,088 | |
| 208,757 | Institution | 0.38% | 622,096 | |
| 149,065 | Institution | 0.27% | 444,214 | |
| 116,251 | Institution | 0.21% | 769,582 | |
| 92,327 | Institution | 0.17% | 486,563 |
FAQ
Who Owns Upstream Bio, Inc. (UPB)?
According to the latest TipRanks data, approximately 0.13% of the company's stock is held by institutional investors, 8.62% is held by insiders, and 61.66% 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 0.13% 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 61.66% 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.