Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
8926
CALL
Tredegar Corp
TG
$268M
| $1K | ﹤0.01% |
100
-2,100
| -95% | -$21.9K |
|
8927
PUT
Millicom
TIGO
$15.8B
| $1K | ﹤0.01% |
+100
| New | +$1.25K |
|
|
TOUR
8928
CALL
Tuniu
TOUR
$55.4M
| $1K | ﹤0.01% |
130
-1,540
| -92% | -$16.9K |
|
|
TOUR
8929
PUT
Tuniu
TOUR
$55.4M
| $1K | ﹤0.01% |
+70
| New | +$770 |
|
8930
CALL
TROOPS Inc
TROO
$239M
| $1K | ﹤0.01% |
+700
| New | +$1.26K |
|
8931
CALL
Townsquare Media
TSQ
$113M
| $1K | ﹤0.01% |
+200
| New | +$1.51K |
|
|
TURN
8932
DELISTED
180 Degree Capital
TURN
| $1K | ﹤0.01% |
+223
| New | +$1.23K |
|
|
TUYA
8933
CALL
Tuya Inc
TUYA
$1.01B
| $1K | ﹤0.01% |
+900
| New | +$1.09K |
|
8934
CALL
Travelzoo
TZOO
$103M
| $1K | ﹤0.01% |
+300
| New | +$1.51K |
|
|
8935
Travelzoo
TZOO
$103M
| $1K | ﹤0.01% |
301
-201
| -40% | -$1.01K |
|
|
UBX
8936
PUT
DELISTED
Unity Biotechnology
UBX
| $1K | ﹤0.01% |
500
+80
| +19% | +$232 |
|
8937
CALL
Procure Space ETF
UFO
$620M
| $1K | ﹤0.01% |
100
-100
| -50% | -$1.96K |
|
8938
PUT
Unisys
UIS
$227M
| $1K | ﹤0.01% |
+300
| New | +$1.88K |
|
8939
CALL
Usio Inc
USIO
$53.3M
| $1K | ﹤0.01% |
700
-4,100
| -85% | -$8.21K |
|
|
GGRP
8940
CALL
Glimpse Group
GGRP
$19M
| $1K | ﹤0.01% |
400
-16,200
| -98% | -$70.4K |
|
8941
CALL
VistaGen Therapeutics
VTGN
$9.29M
| $1K | ﹤0.01% |
400
-2,747
| -87% | -$10.3K |
|
|
8942
PUT
VistaGen Therapeutics
VTGN
$9.29M
| $1K | ﹤0.01% |
460
-1,467
| -76% | -$5.52K |
|
8943
PUT
Wipro
WIT
$18.5B
| $1K | ﹤0.01% |
800
-200
| -20% | -$478 |
|
|
WKEY
8944
WISeKey
WKEY
$71.6M
| $1K | ﹤0.01% |
+340
| New | +$1.39K |
|
8945
Workhorse Group
WKHS
$29.5M
| – | – |
-29
| Closed | -$200K |
|
8946
WSFS Financial
WSFS
$4.1B
| $1K | ﹤0.01% |
30
-212
| -88% | -$9.97K |
|
8947
PUT
Westwater Resources
WWR
$51M
| $1K | ﹤0.01% |
1,500
-3,100
| -67% | -$3.29K |
|
8948
Exagen
XGN
$113M
| $1K | ﹤0.01% |
+547
| New | +$1.4K |
|
|
XHR
8949
PUT
Xenia Hotels & Resorts
XHR
$1.98B
| $1K | ﹤0.01% |
100
-1,300
| -93% | -$19.3K |
|
8950
PUT
cbdMD
YCBD
$5.65M
| $1K | ﹤0.01% |
13
-2
| -13% | -$201 |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.