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 | |
|---|---|---|---|---|---|---|
2476
CALL
Papa John's
PZZA
$997M
| $1.17M | ﹤0.01% |
16,700
-16,200
| -49% | -$1.37M |
|
2477
AutoNation
AN
$7.1B
| $1.17M | ﹤0.01% |
11,463
+9,496
| +483% | +$1.11M |
|
2478
CALL
Genesis Energy
GEL
$1.81B
| $1.17M | ﹤0.01% |
126,900
+107,900
| +568% | +$1.1M |
|
2479
CALL
EVgo
EVGO
$220M
| $1.17M | ﹤0.01% |
147,400
-71,200
| -33% | -$620K |
|
|
SGI
2480
PUT
Somnigroup International
SGI
$15.3B
| $1.17M | ﹤0.01% |
48,300
-20,900
| -30% | -$541K |
|
2481
PUT
Zions Bancorporation
ZION
$10B
| $1.16M | ﹤0.01% |
22,900
+1,700
| +8% | +$93K |
|
2482
PUT
Tencent Music
TME
$15.3B
| $1.16M | ﹤0.01% |
286,500
+26,900
| +10% | +$122K |
|
|
VRAY
2483
DELISTED
ViewRay, Inc.
VRAY
| $1.16M | ﹤0.01% |
319,584
+11,827
| +4% | +$39.7K |
|
2484
CALL
Playtika
PLTK
$1.48B
| $1.16M | ﹤0.01% |
123,800
-221,800
| -64% | -$2.56M |
|
2485
CALL
FuelCell Energy
FCEL
$1.72B
| $1.16M | ﹤0.01% |
11,350
-6,123
| -35% | -$733K |
|
2486
CALL
Helmerich & Payne
HP
$3.36B
| $1.16M | ﹤0.01% |
31,400
-34,700
| -52% | -$1.46M |
|
2487
ICL Group
ICL
$6.65B
| $1.16M | ﹤0.01% |
141,843
+6,372
| +5% | +$59.5K |
|
2488
PUT
Repligen
RGEN
$7.39B
| $1.16M | ﹤0.01% |
6,200
+5,100
| +464% | +$1.08M |
|
|
TRTN
2489
CALL
DELISTED
Triton International Limited
TRTN
| $1.16M | ﹤0.01% |
21,200
-11,900
| -36% | -$712K |
|
2490
CALL
LSB Industries
LXU
$824M
| $1.16M | ﹤0.01% |
81,400
-24,900
| -23% | -$352K |
|
|
CONX
2491
CALL
DELISTED
CONX Corp. Class A Common Stock
CONX
| $1.16M | ﹤0.01% |
115,900
+32,700
| +39% | +$325K |
|
2492
Bumble
BMBL
$386M
| $1.16M | ﹤0.01% |
53,896
+25,979
| +93% | +$768K |
|
2493
PUT
Stem
STEM
$50M
| $1.16M | ﹤0.01% |
4,335
+2,165
| +100% | +$554K |
|
2494
PUT
PubMatic
PUBM
$594M
| $1.16M | ﹤0.01% |
69,500
+23,900
| +52% | +$432K |
|
|
SRG
2495
CALL
Seritage Growth Properties
SRG
$133M
| $1.16M | ﹤0.01% |
128,100
-77,400
| -38% | -$886K |
|
2496
PUT
United Microelectronic
UMC
$47.9B
| $1.16M | ﹤0.01% |
207,400
-412,900
| -67% | -$2.73M |
|
|
EMBJ
2497
PUT
Embraer S.A. ADS
EMBJ
$12.1B
| $1.15M | ﹤0.01% |
134,300
-50,600
| -27% | -$502K |
|
2498
PUT
Magnolia Oil & Gas
MGY
$5.53B
| $1.15M | ﹤0.01% |
58,300
+22,900
| +65% | +$507K |
|
|
PBT
2499
PUT
Permian Basin Royalty Trust
PBT
$1.29B
| $1.15M | ﹤0.01% |
70,700
-8,400
| -11% | -$146K |
|
|
EMBK
2500
CALL
DELISTED
Embark Technology, Inc. Common Stock
EMBK
| $1.15M | ﹤0.01% |
155,300
+152,835
| +6,200% | +$1.52M |
|
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.