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 | |
|---|---|---|---|---|---|---|
1576
PUT
Winnebago Industries
WGO
$870M
| $3.12M | ﹤0.01% |
58,700
+18,300
| +45% | +$1.06M |
|
1577
CALL
Chegg
CHGG
$108M
| $3.12M | ﹤0.01% |
148,000
-21,600
| -13% | -$448K |
|
|
RADA
1578
CALL
DELISTED
Rada Electronic Industries Ltd
RADA
| $3.12M | ﹤0.01% |
323,700
-14,100
| -4% | -$144K |
|
1579
CALL
Fidelity National Financial
FNF
$13.9B
| $3.11M | ﹤0.01% |
89,440
-129,168
| -59% | -$4.82M |
|
1580
CALL
GoDaddy
GDDY
$12.3B
| $3.11M | ﹤0.01% |
43,900
-11,900
| -21% | -$896K |
|
1581
CALL
C3.ai
AI
$1.27B
| $3.11M | ﹤0.01% |
248,800
-36,100
| -13% | -$648K |
|
1582
PUT
Copart
CPRT
$25.9B
| $3.11M | ﹤0.01% |
116,800
-1,600
| -1% | -$47.6K |
|
|
NOVA
1583
PUT
DELISTED
Sunnova Energy
NOVA
| $3.11M | ﹤0.01% |
140,700
+20,900
| +17% | +$507K |
|
|
SWAV
1584
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $3.1M | ﹤0.01% |
11,168
+290
| +3% | +$73.7K |
|
1585
PUT
Masco
MAS
$16B
| $3.1M | ﹤0.01% |
66,500
+63,900
| +2,458% | +$3.33M |
|
1586
PUT
BJs Wholesale Club
BJ
$11.9B
| $3.1M | ﹤0.01% |
42,600
+32,100
| +306% | +$2.3M |
|
1587
PUT
United Therapeutics
UTHR
$26.3B
| $3.1M | ﹤0.01% |
14,800
+12,400
| +517% | +$2.77M |
|
1588
PUT
Kyndryl
KD
$2.66B
| $3.09M | ﹤0.01% |
373,900
+329,500
| +742% | +$3.43M |
|
1589
CALL
Polaris
PII
$4.15B
| $3.09M | ﹤0.01% |
32,300
+9,400
| +41% | +$1.05M |
|
1590
CALL
Dave & Buster's
PLAY
$343M
| $3.08M | ﹤0.01% |
99,300
-8,500
| -8% | -$318K |
|
|
HZNP
1591
PUT
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $3.08M | ﹤0.01% |
49,700
+31,600
| +175% | +$2.21M |
|
1592
CALL
Cheesecake Factory
CAKE
$4.21B
| $3.07M | ﹤0.01% |
104,800
+77,400
| +282% | +$2.35M |
|
1593
PUT
BWX Technologies
BWXT
$16B
| $3.07M | ﹤0.01% |
60,900
+58,800
| +2,800% | +$3.17M |
|
1594
PUT
CDW
CDW
$17.1B
| $3.06M | ﹤0.01% |
19,600
+19,200
| +4,800% | +$3.29M |
|
1595
CALL
Hartford Financial Services
HIG
$38.5B
| $3.06M | ﹤0.01% |
49,400
+6,700
| +16% | +$436K |
|
1596
PUT
Green Plains
GPRE
$1.19B
| $3.06M | ﹤0.01% |
105,200
+41,600
| +65% | +$1.41M |
|
1597
CALL
United States Copper Index Fund
CPER
$742M
| $3.05M | ﹤0.01% |
149,100
-30,200
| -17% | -$635K |
|
1598
CALL
Advance Auto Parts
AAP
$3.37B
| $3.05M | ﹤0.01% |
19,500
+12,700
| +187% | +$2.32M |
|
1599
Moody's
MCO
$81.7B
| $3.04M | ﹤0.01% |
12,485
+5,065
| +68% | +$1.47M |
|
1600
PUT
Campbell Soup
CPB
$6.51B
| $3.03M | ﹤0.01% |
64,400
+37,500
| +139% | +$1.84M |
|
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.