Upstream Bio, Inc. (UPB)
NASDAQ:UPB
Upstream Bio, Inc. (UPB) Ownership Overview
8.75% Insiders
19.29% Mutual Funds
44.29% Other Institutional Investors
9.44% ETFs
18.23% Public Companies and
Individual Investors
The ownership structure of Upstream Bio, Inc. (UPB) stock is a mix of institutional, retail, and individual investors. Approximately 73.02% of the company’s stock is owned by Institutional Investors, 8.75% is owned by Insiders, and 18.23% is owned by Public Companies and Individual Investors.
Recent Insider Trading Activity
Date | Name | Activity | Value |
|---|---|---|---|
Mar 17, 2026 | xxxxxxxxxxxxx | $7915 | |
Mar 17, 2026 | xxxxxxxxxxxxx | $8305 | |
Mar 17, 2026 | xxxxxxxxxxxxx | $19444 | |
Mar 17, 2026 | xxxxxxxxxxxxx | $4413 |
Recent Hedge Fund Trading Activity
Date | Firm | Activity | Value |
|---|---|---|---|
Dec 31, 2025 | xxxxxxxxxxxxx | $372280 | |
Dec 31, 2025 | xxxxxxxxxxxxx | $20640841 | |
Dec 31, 2025 | xxxxxxxxxxxxx | $36008854 |
Top Shareholders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 4,554,873 | Insider | 8.43% | 39,467,975 | |
| 2,386,360 | Institution | 4.42% | 20,677,809 | |
| 2,290,346 | Institution | 4.24% | 19,845,848 | |
| 1,806,560 | Institution | 3.34% | 15,653,842 | |
| 1,626,857 | Institution | 3.01% | 14,096,716 | |
| 1,603,603 | Institution | 2.97% | 13,895,220 | |
| 1,409,659 | Institution | 2.61% | 12,214,695 | |
| 1,326,293 | Institution | 2.45% | 11,492,329 | |
| 760,252 | Institution | 1.41% | 6,587,584 | |
| 699,900 | Institution | 1.30% | 6,064,634 |
Top Mutual Fund Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 2,386,360 | Institution | 4.42% | 20,677,809 | |
| 1,806,560 | Institution | 3.34% | 15,653,842 | |
| 1,626,857 | Institution | 3.01% | 14,096,716 | |
| 1,603,603 | Institution | 2.97% | 13,895,220 | |
| 699,900 | Institution | 1.30% | 6,064,634 | |
| 551,313 | Institution | 1.02% | 4,777,127 | |
| 502,771 | Institution | 0.93% | 4,356,511 | |
| 372,282 | Institution | 0.69% | 3,225,824 | |
| 197,564 | Institution | 0.37% | 1,711,892 | |
| 184,700 | Institution | 0.34% | 1,600,426 |
Top ETF Holders
Holder | # of Shares | Type | % Holding | Value |
|---|---|---|---|---|
| 1,443,025 | Institution | 2.67% | 11,082,432 | |
| 814,594 | Institution | 1.51% | 7,058,457 | |
| 644,126 | Institution | 1.19% | 5,581,352 | |
| 369,756 | Institution | 0.68% | 2,839,726 | |
| 285,351 | Institution | 0.53% | 2,472,566 | |
| 248,007 | Institution | 0.46% | 2,408,148 | |
| 184,425 | Institution | 0.34% | 1,598,043 | |
| 164,291 | Institution | 0.30% | 1,423,582 | |
| 162,192 | Institution | 0.30% | 1,245,635 | |
| 85,031 | Institution | 0.16% | 2,642,763 |
FAQ
Who Owns Upstream Bio, Inc. (UPB)?
According to the latest TipRanks data, approximately 44.29% of the company's stock is held by institutional investors, 8.75% is held by insiders, and 18.23% 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 44.29% 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 18.23% 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.