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 | |
|---|---|---|---|---|---|---|
2926
CALL
Weatherford International
WFRD
$6.04B
| $791K | ﹤0.01% |
24,500
+20,200
| +470% | +$505K |
|
|
PTRA
2927
CALL
DELISTED
Proterra Inc. Common Stock
PTRA
| $791K | ﹤0.01% |
159,000
-9,700
| -6% | -$54.4K |
|
2928
PUT
Fulgent Genetics
FLGT
$563M
| $789K | ﹤0.01% |
20,700
-300
| -1% | -$15K |
|
|
DCH
2929
Dauch Corp
DCH
$1.33B
| $788K | ﹤0.01% |
115,486
+80,489
| +230% | +$725K |
|
2930
CALL
Cars.com
CARS
$705M
| $788K | ﹤0.01% |
68,600
+63,100
| +1,147% | +$745K |
|
2931
GXO Logistics
GXO
$6.12B
| $788K | ﹤0.01% |
22,489
+21,142
| +1,570% | +$934K |
|
2932
CALL
Harley-Davidson
HOG
$2.68B
| $788K | ﹤0.01% |
22,600
-29,000
| -56% | -$1.09M |
|
2933
CALL
Murphy Oil
MUR
$5.26B
| $787K | ﹤0.01% |
22,400
-40,100
| -64% | -$1.39M |
|
2934
ProShares UltraShort Yen
YCS
$31.6M
| $787K | ﹤0.01% |
24,214
+10,694
| +79% | +$318K |
|
2935
Baker Hughes
BKR
$58B
| $786K | ﹤0.01% |
37,504
-32,779
| -47% | -$821K |
|
|
JAMF
2936
CALL
DELISTED
Jamf
JAMF
| $786K | ﹤0.01% |
35,500
+5,000
| +16% | +$124K |
|
|
EFC
2937
CALL
Ellington Financial
EFC
$1.7B
| $785K | ﹤0.01% |
69,100
+11,200
| +19% | +$167K |
|
2938
PUT
Edgewell Personal Care
EPC
$1.3B
| $785K | ﹤0.01% |
21,000
+13,400
| +176% | +$523K |
|
2939
CALL
Teleflex
TFX
$5.92B
| $785K | ﹤0.01% |
+3,900
| New | +$933K |
|
2940
CALL
Frontier Group Holdings
ULCC
$1.42B
| $785K | ﹤0.01% |
81,000
+6,100
| +8% | +$74.8K |
|
|
AUY
2941
CALL
DELISTED
Yamana Gold, Inc.
AUY
| $785K | ﹤0.01% |
173,400
-137,700
| -44% | -$638K |
|
|
NEX
2942
CALL
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $784K | ﹤0.01% |
106,000
+4,100
| +4% | +$35.9K |
|
2943
CALL
Glaukos
GKOS
$8.8B
| $782K | ﹤0.01% |
14,700
+14,400
| +4,800% | +$743K |
|
2944
CALL
Playboy Inc
PLBY
$144M
| $782K | ﹤0.01% |
194,200
+78,900
| +68% | +$424K |
|
|
SUM
2945
CALL
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $781K | ﹤0.01% |
33,154
+25,832
| +353% | +$693K |
|
2946
PUT
Perrigo
PRGO
$1.41B
| $780K | ﹤0.01% |
21,900
+17,700
| +421% | +$711K |
|
2947
CALL
Broadridge
BR
$18.3B
| $779K | ﹤0.01% |
5,400
+2,900
| +116% | +$471K |
|
|
SWIR
2948
PUT
DELISTED
Sierra Wireless
SWIR
| $779K | ﹤0.01% |
25,600
+24,900
| +3,557% | +$716K |
|
2949
PUT
Leidos
LDOS
$15B
| $778K | ﹤0.01% |
8,900
+8,100
| +1,013% | +$791K |
|
2950
PUT
FTAI Aviation
FTAI
$21.3B
| $777K | ﹤0.01% |
154,200
+103,496
| +204% | +$1.79M |
|
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.