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 | |
|---|---|---|---|---|---|---|
3001
PUT
Upbound Group
UPBD
$1.26B
| $742K | ﹤0.01% |
42,400
+25,600
| +152% | +$637K |
|
3002
PUT
Abercrombie & Fitch
ANF
$4.58B
| $740K | ﹤0.01% |
47,600
-4,100
| -8% | -$70.8K |
|
3003
PUT
Acuity Brands
AYI
$10.3B
| $740K | ﹤0.01% |
4,700
+3,800
| +422% | +$643K |
|
3004
CALL
PagerDuty
PD
$795M
| $740K | ﹤0.01% |
32,100
+16,400
| +104% | +$423K |
|
3005
Tractor Supply
TSCO
$16.5B
| $740K | ﹤0.01% |
19,925
+6,695
| +51% | +$261K |
|
3006
CALL
Autohome
ATHM
$2.65B
| $739K | ﹤0.01% |
25,700
-24,400
| -49% | -$850K |
|
|
ESTE
3007
CALL
DELISTED
Earthstone Energy Inc. Class A Common Stock
ESTE
| $739K | ﹤0.01% |
60,000
+33,800
| +129% | +$460K |
|
3008
CALL
Actinium Pharmaceuticals
ATNM
$27.2M
| $738K | ﹤0.01% |
100,000
+50,100
| +100% | +$311K |
|
3009
iShares S&P 500 Growth ETF
IVW
$71.9B
| $738K | ﹤0.01% |
12,765
+1,405
| +12% | +$91.3K |
|
3010
CALL
Rayonier
RYN
$6.64B
| $737K | ﹤0.01% |
27,115
+331
| +1% | +$10.7K |
|
|
XIFR
3011
CALL
XPLR Infrastructure LP
XIFR
$1.11B
| $737K | ﹤0.01% |
10,200
-32,100
| -76% | -$2.57M |
|
|
DO
3012
PUT
DELISTED
Diamond Offshore Drilling, Inc.
DO
| $737K | ﹤0.01% |
111,300
+14,000
| +14% | +$94.4K |
|
3013
CALL
Quest Diagnostics
DGX
$26B
| $736K | ﹤0.01% |
6,000
+1,300
| +28% | +$171K |
|
3014
Omega Healthcare
OHI
$15.4B
| $735K | ﹤0.01% |
24,954
+9,627
| +63% | +$302K |
|
3015
Plains All American Pipeline
PAA
$17.2B
| $735K | ﹤0.01% |
69,932
-46,372
| -40% | -$518K |
|
3016
PUT
FIGS
FIGS
$1.73B
| $734K | ﹤0.01% |
89,000
+67,000
| +305% | +$713K |
|
|
MTBL
3017
PUT
DELISTED
Moatable, Inc. American Depositary Share (each representing forty-five (45) Class A Ordinary Shares)
MTBL
| $734K | ﹤0.01% |
248,000
-245,000
| -50% | -$712K |
|
3018
Sociedad Química y Minera de Chile
SQM
$19.1B
| $733K | ﹤0.01% |
+8,084
| New | +$785K |
|
|
OLPX
3019
DELISTED
Olaplex Holdings
OLPX
| $732K | ﹤0.01% |
76,674
+63,791
| +495% | +$915K |
|
3020
CALL
Ameriprise Financial
AMP
$48.3B
| $730K | ﹤0.01% |
2,900
+2,100
| +263% | +$553K |
|
3021
CALL
Huntington Ingalls Industries
HII
$11.8B
| $730K | ﹤0.01% |
3,300
+1,400
| +74% | +$314K |
|
3022
PUT
Organon & Co
OGN
$3.55B
| $730K | ﹤0.01% |
31,200
+10,800
| +53% | +$326K |
|
3023
PUT
Wendy's
WEN
$1.46B
| $730K | ﹤0.01% |
39,100
+18,900
| +94% | +$380K |
|
3024
Constellation Energy
CEG
$92.8B
| $728K | ﹤0.01% |
+8,760
| New | +$646K |
|
3025
CALL
Jefferies Financial Group
JEF
$13.2B
| $728K | ﹤0.01% |
25,836
+13,807
| +115% | +$418K |
|
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.