Security key
05455M100
- Security type / class
- Equity / COM
- Total 13F shares
- 23,692,912
- Total 13F value
- $32,222,166
- Share change
- -1,875,160
- Put/Call ratio
- 0.56%
- SEC-reported price per share
- $1.36
- Number of holders
- 45
- Value change
- -$3,195,970
- Number of buys
- 15
- Number of sells
- 17
Open additional details 1 more signal available
Report period
Q4 2023
Institutions
45
Top holders
10
AVRO full security history
Ownership snapshot
Full 13F holder table
Tectonic Therapeutic, Inc. SEC filings
Tectonic Therapeutic, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of AVRO - AVROBIO INC - COM (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Atlas Venture Life Scienc...
Disclosed value leader
Atlas Venture Life Scienc...
Comparable rows
0/15
Latest evidence
30 Sep 2023
13F
Highest disclosed value: $6,993,727
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Atlas Venture Life Science Advisors, LLC has the largest disclosed position value at $6.99M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Atlas Venture Life Science Advisors, LLC's linked filing trail.
Disclosed position value
Top 5
Atlas Venture Life Science Adviso...
$6.99M
BML Capital Management, LLC
$6.16M
TANG CAPITAL MANAGEMENT LLC
$5.41M
Newtyn Management, LLC
$3.08M
ACADIAN ASSET MANAGEMENT LLC
$2.66M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Atlas Venture Life Science Advisors, LLC |
13F
Company
|
—
denominator unverified
|
$6,993,727
4,541,381 shares
|
— | 30 Sep 2023 |
| BML Capital Management, LLC |
13F
Company
|
—
denominator unverified
|
$6,162,506
4,001,627 shares
|
— | 30 Sep 2023 |
| TANG CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$5,409,536
3,512,686 shares
|
— | 30 Sep 2023 |
| Newtyn Management, LLC |
13F
Company
|
—
denominator unverified
|
$3,080,000
2,000,000 shares
|
— | 30 Sep 2023 |
| ACADIAN ASSET MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$2,655,000
1,725,089 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$2,425,244
1,574,834 shares
|
— | 30 Sep 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
45
Shares
23,692,912
Rows available
45
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2023 vs Q3 2023 Across Filers
Q3 2023 holders
47
Q4 2023 holders
45
Holder diff
-2
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|