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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1776
PUT
Range Resources
RRC
$9.11B
| $2.46M | ﹤0.01% |
97,500
-52,300
| -35% | -$1.58M |
|
|
AYX
1777
CALL
DELISTED
Alteryx Inc
AYX
| $2.46M | ﹤0.01% |
44,100
+22,900
| +108% | +$1.34M |
|
1778
CALL
Bloom Energy
BE
$52.6B
| $2.46M | ﹤0.01% |
123,000
+59,300
| +93% | +$1.34M |
|
1779
CALL
BorgWarner
BWA
$13.2B
| $2.46M | ﹤0.01% |
88,949
+27,151
| +44% | +$876K |
|
1780
CALL
Western Alliance Bancorporation
WAL
$9.07B
| $2.45M | ﹤0.01% |
37,300
+27,300
| +273% | +$2.07M |
|
1781
CALL
Martin Marietta Materials
MLM
$33.6B
| $2.45M | ﹤0.01% |
7,600
-6,000
| -44% | -$2.03M |
|
1782
CALL
Natera
NTRA
$37.5B
| $2.44M | ﹤0.01% |
55,800
+53,700
| +2,557% | +$2.56M |
|
1783
PUT
Vornado Realty Trust
VNO
$7.47B
| $2.44M | ﹤0.01% |
105,600
+89,400
| +552% | +$2.49M |
|
1784
Crocs
CROX
$6.69B
| $2.44M | ﹤0.01% |
35,602
+8,837
| +33% | +$614K |
|
1785
CALL
Invesco Agriculture Commodity Strategy No K-1 ETF
PDBA
$313M
| $2.44M | ﹤0.01% |
+150,900
| New | +$4.54M |
|
1786
CALL
LegalZoom.com
LZ
$1.23B
| $2.44M | ﹤0.01% |
284,200
-10,600
| -4% | -$110K |
|
1787
CALL
KeyCorp
KEY
$24.3B
| $2.43M | ﹤0.01% |
151,900
-9,300
| -6% | -$166K |
|
|
ACB
1788
CALL
Aurora Cannabis
ACB
$165M
| $2.43M | ﹤0.01% |
199,020
+37,600
| +23% | +$553K |
|
1789
CALL
Black Stone Minerals
BSM
$3.11B
| $2.43M | ﹤0.01% |
155,100
-86,700
| -36% | -$1.32M |
|
1790
PUT
Comstock Resources
CRK
$3.97B
| $2.42M | ﹤0.01% |
140,200
+81,700
| +140% | +$1.35M |
|
1791
CALL
TripAdvisor
TRIP
$1.59B
| $2.42M | ﹤0.01% |
109,800
-50,300
| -31% | -$1.13M |
|
1792
PUT
Marqeta
MQ
$1.8B
| $2.41M | ﹤0.01% |
84,750
+65,450
| +339% | +$2.18M |
|
1793
PUT
Regions Financial
RF
$26.3B
| $2.41M | ﹤0.01% |
120,200
-44,600
| -27% | -$942K |
|
|
HUT
1794
CALL
Hut 8
HUT
$12.4B
| $2.41M | ﹤0.01% |
270,480
+28,740
| +12% | +$299K |
|
1795
PUT
Agilent Technologies
A
$39.1B
| $2.41M | ﹤0.01% |
19,800
-32,400
| -62% | -$4.16M |
|
1796
CALL
Check Point Software Technologies
CHKP
$13.3B
| $2.4M | ﹤0.01% |
21,400
-24,200
| -53% | -$2.93M |
|
1797
CALL
Equinix
EQIX
$107B
| $2.39M | ﹤0.01% |
4,200
+700
| +20% | +$457K |
|
1798
CALL
Huazhu Hotels Group
HTHT
$12.4B
| $2.39M | ﹤0.01% |
71,200
+1,700
| +2% | +$64.2K |
|
1799
CALL
QuidelOrtho
QDEL
$1.09B
| $2.39M | ﹤0.01% |
33,400
+10,300
| +45% | +$922K |
|
1800
Vermilion Energy
VET
$1.73B
| $2.38M | ﹤0.01% |
111,320
-91,598
| -45% | -$2.15M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.