SYNLOGIC, INC. - Common Stock, par value $0.001 per share (SYBX)
CUSIP: 87166L209
Q3 2023 13F Holders as of 30 Sep 2023
- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Shares outstanding
- 11,703,954
- Total 13F shares
- 2,378,844
- Share change
- +2,358,396
- Total reported value
- $6,684,705
- Price per share
- $2.81
- Number of holders
- 25
- Value change
- +$6,627,246
- Number of buys
- 24
Quarterly Holders Quick Answers
What is CUSIP 87166L209?
CUSIP 87166L209 identifies SYBX - SYNLOGIC, INC. - Common Stock, par value $0.001 per share in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Next holder-history checks
These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Newer quarter: Q4 2023
Recent filing periods for CUSIP 87166L209:
Top shareholders of SYBX - SYNLOGIC, INC. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13F
|
Company |
87%
|
10,142,239
|
$4,361,163 | — | 30 Jun 2023 | |
| ORBIMED ADVISORS LLC |
13F
|
Company |
52%
|
6,029,995
|
$2,592,898 | — | 30 Jun 2023 | |
| NEA Management Company, LLC |
13F
|
Company |
36%
|
4,228,940
|
$1,818,444 | — | 30 Jun 2023 | |
| Atlas Venture Associates IX, LLC |
13F
|
Company |
23%
|
2,651,963
|
$1,140,344 | — | 30 Jun 2023 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
22%
|
2,520,514
|
$1,083,821 | — | 30 Jun 2023 | |
| VANGUARD GROUP INC |
13F
|
Company |
19%
|
2,243,586
|
$964,742 | — | 30 Jun 2023 | |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) |
13F
|
Company |
5.2%
|
608,234
|
$261,541 | — | 30 Jun 2023 | |
| Sofinnova Investments, Inc. |
13F
|
Company |
4.9%
|
574,972
|
$247,238 | — | 30 Jun 2023 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
3.4%
|
400,006
|
$172,002 | — | 30 Jun 2023 | |
| FIDUCIARY TRUST CO |
13F
|
Company |
2.9%
|
335,294
|
$144,176 | — | 30 Jun 2023 | |
| Ikarian Capital, LLC |
13F
|
Company |
2.6%
|
306,757
|
$131,905 | — | 30 Jun 2023 | |
| BlackRock Finance, Inc. |
13F
|
Company |
2.6%
|
300,109
|
$129,047 | — | 30 Jun 2023 | |
| HARBOR CAPITAL ADVISORS, INC. |
13F
|
Company |
2.5%
|
290,605
|
$124,960 | — | 30 Jun 2023 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.8%
|
214,300
|
$92,000 | — | 30 Jun 2023 | |
| ABG Innovation Capital Partners III GP Ltd |
13F
|
Company |
1.8%
|
205,906
|
$88,540 | — | 30 Jun 2023 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.3%
|
155,000
|
$66,650 | — | 30 Jun 2023 | |
| STATE STREET CORP |
13F
|
Company |
1.3%
|
154,284
|
$66,342 | — | 30 Jun 2023 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
1.1%
|
131,100
|
$56,373 | — | 30 Jun 2023 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
0.86%
|
101,170
|
$43,503 | — | 30 Jun 2023 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.8%
|
93,863
|
$40,361 | — | 30 Jun 2023 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
0.67%
|
77,998
|
$33,539 | — | 30 Jun 2023 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.66%
|
77,009
|
$33,114 | — | 30 Jun 2023 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.64%
|
74,352
|
$31,971 | — | 30 Jun 2023 | |
| PVG ASSET MANAGEMENT CORP |
13F
|
Company |
0.59%
|
68,455
|
$29,435 | — | 30 Jun 2023 | |
| FLAGSHIP HARBOR ADVISORS, LLC |
13F
|
Company |
0.3%
|
35,000
|
$15,050 | — | 30 Jun 2023 | |
| Cetera Investment Advisers |
13F
|
Company |
0.29%
|
33,890
|
$14,573 | — | 30 Jun 2023 | |
| Ensign Peak Advisors, Inc |
13F
|
Company |
0.28%
|
33,109
|
$14,237 | — | 30 Jun 2023 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.27%
|
31,737
|
$13,643 | — | 30 Jun 2023 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
0.26%
|
30,870
|
$13,274 | — | 30 Jun 2023 | |
| LPL Financial LLC |
13F
|
Company |
0.26%
|
30,088
|
$12,938 | — | 30 Jun 2023 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.21%
|
25,000
|
$10,750 | — | 30 Jun 2023 | |
| CLEAR STREET LLC |
13F
|
Company |
0.2%
|
23,553
|
$10,128 | — | 30 Jun 2023 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.16%
|
19,020
|
$8,179 | — | 30 Jun 2023 | |
| MORGAN STANLEY |
13F
|
Company |
0.16%
|
18,902
|
$8,128 | — | 30 Jun 2023 | |
| Physician Wealth Advisors, Inc. |
13F
|
Company |
0.15%
|
17,302
|
$7,080 | — | 30 Jun 2023 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.15%
|
17,577
|
$7,000 | — | 30 Jun 2023 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.14%
|
16,900
|
$7,000 | — | 30 Jun 2023 | |
| SOUNDMARK WEALTH MANAGEMENT, LLC |
13F
|
Company |
0.12%
|
13,663
|
$5,875 | — | 30 Jun 2023 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.07%
|
8,730
|
$3,754 | — | 30 Jun 2023 | |
| Endurance Wealth Management, Inc. |
13F
|
Company |
0.06%
|
7,000
|
$3,000 | — | 30 Jun 2023 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.01%
|
679
|
$291 | — | 30 Jun 2023 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0%
|
524
|
$225 | — | 30 Jun 2023 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0%
|
363
|
$156 | — | 30 Jun 2023 | |
| ICA Group Wealth Management, LLC |
13F
|
Company |
0%
|
200
|
$86 | — | 30 Jun 2023 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0%
|
19
|
$8 | — | 30 Jun 2023 | |
| Gregg Beloff |
3/4/5
|
Interim Chief Financial Officer |
—
class O/S missing
|
50,000
|
— | — | 06 Dec 2021 | |
| Lisa Kelly-Croswell |
3/4/5
|
Director |
—
class O/S missing
|
30,000
|
— | — | 22 Jun 2023 | |
| Mathers Edward T. |
3/4/5
|
Director |
—
class O/S missing
|
30,000
|
— | — | 22 Jun 2023 | |
| Michael F. Burgess |
3/4/5
|
Director |
—
class O/S missing
|
30,000
|
— | — | 22 Jun 2023 | |
| Michael Thomas Heffernan |
3/4/5
|
Director |
—
class O/S missing
|
30,000
|
— | — | 22 Jun 2023 |
Institutional Holders of SYNLOGIC, INC. - Common Stock, par value $0.001 per share (SYBX) as of Q3 2023
As of 30 Sep 2023,
SYNLOGIC, INC. - Common Stock, par value $0.001 per share (SYBX) was held by
25 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
2,378,844 shares.
The largest 10 holders included
FMR LLC, ARMISTICE CAPITAL, LLC, ORBIMED ADVISORS LLC, Atlas Venture Associates IX, LLC, Alyeska Investment Group, L.P., VANGUARD GROUP INC, UBS OCONNOR LLC, Sofinnova Investments, Inc., GEODE CAPITAL MANAGEMENT, LLC, and Fiduciary Trust Co.
This page lists
25
institutional shareholders reporting positions in this security
for the Q3 2023 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q3 2023 vs Q4 2025 Across Filers
Q4 2025 holders
25
Q3 2023 holders
25
Holder diff
0
| Investor | Q4 2025 Shares | Q3 2023 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q3 2023 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.