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 | |
|---|---|---|---|---|---|---|
|
KW
7926
PUT
DELISTED
Kennedy-Wilson Holdings
KW
| $6K | ﹤0.01% |
+400
| New | +$6.43K |
|
7927
PUT
Lands' End
LE
$387M
| $6K | ﹤0.01% |
900
-9,300
| -91% | -$85.2K |
|
7928
Littelfuse
LFUS
$10.9B
| $6K | ﹤0.01% |
+29
| New | +$6.47K |
|
|
LGO
7929
PUT
Largo
LGO
$59.1M
| $6K | ﹤0.01% |
1,200
-700
| -37% | -$3.85K |
|
7930
CALL
Live Oak Bancshares
LOB
$1.97B
| $6K | ﹤0.01% |
200
-200
| -50% | -$6.38K |
|
|
LITS
7931
CALL
Lite Strategy Inc
LITS
$33M
| $6K | ﹤0.01% |
1,245
-5,570
| -82% | -$36.3K |
|
7932
CALL
Mizuho Financial
MFG
$122B
| $6K | ﹤0.01% |
+2,200
| New | +$5.18K |
|
7933
PUT
Enviri
NVRI
$623M
| $6K | ﹤0.01% |
1,100
-400
| -27% | -$2.38K |
|
7934
Oaktree Specialty Lending
OCSL
$1.06B
| $6K | ﹤0.01% |
+333
| New | +$6.7K |
|
7935
CALL
Orion Energy Systems
OESX
$41.4M
| $6K | ﹤0.01% |
+380
| New | +$7.05K |
|
7936
CALL
O-I Glass
OI
$1.19B
| $6K | ﹤0.01% |
400
-7,100
| -95% | -$114K |
|
|
7937
O-I Glass
OI
$1.19B
| $6K | ﹤0.01% |
386
-7,546
| -95% | -$122K |
|
7938
CALL
Odyssey Marine Exploration
OMEX
$39.2M
| $6K | ﹤0.01% |
1,700
+1,000
| +143% | +$3.13K |
|
7939
CALL
Onto Innovation
ONTO
$11.7B
| $6K | ﹤0.01% |
100
-600
| -86% | -$43.1K |
|
7940
Organogenesis Holdings
ORGO
$328M
| $6K | ﹤0.01% |
2,379
+2,107
| +775% | +$6.15K |
|
7941
CALL
OneSpan
OSPN
$577M
| $6K | ﹤0.01% |
+600
| New | +$6.89K |
|
7942
PUT
Ouster
OUST
$2.27B
| $6K | ﹤0.01% |
810
-590
| -42% | -$6.42K |
|
7943
CALL
Pampa Energía
PAM
$4.71B
| $6K | ﹤0.01% |
200
-200
| -50% | -$5.22K |
|
|
PDM
7944
Piedmont Realty Trust
PDM
$1.22B
| $6K | ﹤0.01% |
+748
| New | +$7.39K |
|
7945
CALL
Pegasystems
PEGA
$4.95B
| $6K | ﹤0.01% |
400
-400
| -50% | -$6.92K |
|
7946
CALL
Pagaya Technologies
PGY
$1.36B
| $6K | ﹤0.01% |
433
-3,559
| -89% | -$49.3K |
|
7947
PUT
Phathom Pharmaceuticals
PHAT
$940M
| $6K | ﹤0.01% |
600
+300
| +100% | +$3.09K |
|
|
PINC
7948
CALL
DELISTED
Premier
PINC
| $6K | ﹤0.01% |
+200
| New | +$6.67K |
|
7949
POSCO
PKX
$15.1B
| $6K | ﹤0.01% |
128
+111
| +653% | +$5.5K |
|
7950
CALL
RCM Technologies
RCMT
$206M
| $6K | ﹤0.01% |
500
-2,100
| -81% | -$32.7K |
|
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.