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 | |
|---|---|---|---|---|---|---|
|
CMBT
4076
CALL
CMB.TECH NV
CMBT
$4.69B
| $300K | ﹤0.01% |
19,500
-10,100
| -34% | -$154K |
|
|
ROVR
4077
CALL
DELISTED
Rover Group, Inc. Class A Common Stock
ROVR
| $300K | ﹤0.01% |
90,000
+73,300
| +439% | +$292K |
|
|
CANO
4078
PUT
DELISTED
Cano Health, Inc.
CANO
| $300K | ﹤0.01% |
347
+304
| +707% | +$191K |
|
|
TRTN
4079
DELISTED
Triton International Limited
TRTN
| $300K | ﹤0.01% |
5,485
+310
| +6% | +$18.6K |
|
4080
CALL
Lear
LEA
$6.54B
| $299K | ﹤0.01% |
2,500
+500
| +25% | +$69.1K |
|
4081
CALL
Puma Biotechnology
PBYI
$404M
| $299K | ﹤0.01% |
126,300
+97,700
| +342% | +$285K |
|
4082
PUT
RB Global
RBA
$20.4B
| $299K | ﹤0.01% |
4,800
+3,000
| +167% | +$204K |
|
4083
PUT
Sportsman's Warehouse
SPWH
$44.5M
| $299K | ﹤0.01% |
36,100
+1,600
| +5% | +$15.2K |
|
|
STKL
4084
CALL
DELISTED
SunOpta
STKL
| $299K | ﹤0.01% |
32,900
-61,600
| -65% | -$584K |
|
|
ALTU
4085
PUT
DELISTED
Altitude Acquisition Corp
ALTU
| $299K | ﹤0.01% |
29,800
+200
| +0.7% | +$1.99K |
|
4086
PUT
Commercial Metals
CMC
$7.6B
| $298K | ﹤0.01% |
8,400
+500
| +6% | +$19.3K |
|
4087
CALL
Camden Property Trust
CPT
$11B
| $298K | ﹤0.01% |
2,500
+2,000
| +400% | +$267K |
|
4088
Ethan Allen Interiors
ETD
$570M
| $298K | ﹤0.01% |
+14,119
| New | +$330K |
|
4089
CALL
FerroAtlántica
GSM
$594M
| $298K | ﹤0.01% |
56,500
+47,800
| +549% | +$296K |
|
4090
CALL
Imperial Petroleum
IMPP
$213M
| $298K | ﹤0.01% |
61,160
+6,580
| +12% | +$37.4K |
|
4091
PUT
Fidelity Nasdaq Composite Index ETF
ONEQ
$10.4B
| $298K | ﹤0.01% |
7,200
+1,500
| +26% | +$69.9K |
|
4092
CALL
Trex
TREX
$4.51B
| $298K | ﹤0.01% |
6,800
-9,000
| -57% | -$481K |
|
4093
PUT
Aspen Aerogels
ASPN
$384M
| $297K | ﹤0.01% |
32,300
+21,900
| +211% | +$265K |
|
4094
CALL
Crane NXT
CXT
$2.99B
| $297K | ﹤0.01% |
9,789
+9,213
| +1,599% | +$304K |
|
4095
CALL
Global X MSCI Norway ETF
NORW
$88M
| $297K | ﹤0.01% |
17,300
+8,100
| +88% | +$214K |
|
|
4096
PUT
Global X MSCI Norway ETF
NORW
$88M
| $297K | ﹤0.01% |
18,200
-16,800
| -48% | -$443K |
|
4097
PUT
Plains GP Holdings
PAGP
$5.21B
| $297K | ﹤0.01% |
27,300
-3,800
| -12% | -$43.5K |
|
4098
PUT
SFL Corp
SFL
$1.64B
| $297K | ﹤0.01% |
32,700
+10,200
| +45% | +$103K |
|
|
LICY
4099
PUT
DELISTED
Li-Cycle Holdings Corp.
LICY
| $296K | ﹤0.01% |
6,975
+1,412
| +25% | +$76.8K |
|
4100
PUT
Alpha and Omega Semiconductor
AOSL
$950M
| $295K | ﹤0.01% |
9,600
-3,500
| -27% | -$130K |
|
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.