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 | |
|---|---|---|---|---|---|---|
5001
PUT
Medpace
MEDP
$16.3B
| $106K | ﹤0.01% |
500
+400
| +400% | +$79.9K |
|
5002
PUT
Northern Trust
NTRS
$21.8B
| $106K | ﹤0.01% |
1,200
-6,100
| -84% | -$534K |
|
5003
PUT
Park Hotels & Resorts
PK
$3.08B
| $106K | ﹤0.01% |
9,000
-200
| -2% | -$2.44K |
|
5004
PUT
Advanced Drainage Systems
WMS
$10.6B
| $106K | ﹤0.01% |
1,300
+800
| +160% | +$81.1K |
|
|
SGFY
5005
CALL
DELISTED
Signify Health, Inc.
SGFY
| $106K | ﹤0.01% |
3,700
-48,700
| -93% | -$1.41M |
|
|
GRN
5006
PUT
DELISTED
iPath Global Carbon ETN
GRN
| $106K | ﹤0.01% |
3,800
+1,800
| +90% | +$50.2K |
|
|
AZEK
5007
CALL
DELISTED
The AZEK Co
AZEK
| $105K | ﹤0.01% |
5,200
-30,100
| -85% | -$557K |
|
|
BORR
5008
Borr Drilling
BORR
$1.19B
| $105K | ﹤0.01% |
21,313
-11,463
| -35% | -$51K |
|
5009
CALL
Churchill Downs
CHDN
$6.17B
| $105K | ﹤0.01% |
1,000
| – | – |
|
5010
CALL
Eve Holding
EVEX
$777M
| $105K | ﹤0.01% |
14,700
-14,000
| -49% | -$122K |
|
5011
iShares MSCI Italy ETF
EWI
$987M
| $105K | ﹤0.01% |
+3,919
| New | +$99.8K |
|
5012
National Beverage
FIZZ
$3.06B
| $105K | ﹤0.01% |
+2,269
| New | +$106K |
|
5013
PUT
Galicia Financial Group
GGAL
$7.89B
| $105K | ﹤0.01% |
10,800
-10,200
| -49% | -$80.4K |
|
|
GOOD
5014
PUT
Gladstone Commercial Corp
GOOD
$623M
| $105K | ﹤0.01% |
5,700
-9,700
| -63% | -$173K |
|
5015
Hallador Energy
HNRG
$646M
| $105K | ﹤0.01% |
10,602
+3,297
| +45% | +$27.1K |
|
|
5016
PUT
Hallador Energy
HNRG
$646M
| $105K | ﹤0.01% |
10,600
-500
| -5% | -$4.12K |
|
5017
CALL
Ouster
OUST
$2.11B
| $105K | ﹤0.01% |
12,170
-20
| -0.2% | -$218 |
|
5018
SI-BONE Inc
SIBN
$818M
| $105K | ﹤0.01% |
7,759
+7,606
| +4,971% | +$111K |
|
|
LEV
5019
PUT
DELISTED
The Lion Electric Company
LEV
| $105K | ﹤0.01% |
46,900
+400
| +0.9% | +$1.08K |
|
|
HA
5020
DELISTED
Hawaiian Holdings, Inc.
HA
| $105K | ﹤0.01% |
+10,293
| New | +$138K |
|
|
PAYA
5021
PUT
DELISTED
Paya Holdings Inc. Class A Common Stock
PAYA
| $105K | ﹤0.01% |
13,400
-100
| -0.7% | -$771 |
|
5022
Blend Labs
BLND
$438M
| $104K | ﹤0.01% |
72,834
+17,520
| +32% | +$31.4K |
|
|
TDAY
5023
CALL
USA Today Co
TDAY
$1.29B
| $104K | ﹤0.01% |
51,700
+1,400
| +3% | +$2.69K |
|
5024
CALL
IPG Photonics
IPGP
$3.4B
| $104K | ﹤0.01% |
1,100
-10,500
| -91% | -$942K |
|
|
OPTN
5025
PUT
DELISTED
OptiNose
OPTN
| $104K | ﹤0.01% |
3,780
| – | – |
|
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.