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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2451
PUT
Cal-Maine
CALM
$4.28B
| $1.01M | ﹤0.01% |
18,600
-9,500
| -34% | -$549K |
|
2452
CALL
HDFC Bank
HDB
$119B
| $1.01M | ﹤0.01% |
29,600
-148,400
| -83% | -$4.82M |
|
|
SAGE
2453
CALL
DELISTED
Sage Therapeutics
SAGE
| $1.01M | ﹤0.01% |
26,500
-5,300
| -17% | -$202K |
|
2454
PUT
BioCryst Pharmaceuticals
BCRX
$2.37B
| $1.01M | ﹤0.01% |
87,700
+32,100
| +58% | +$400K |
|
2455
CALL
Danaos Corp
DAC
$2.55B
| $1M | ﹤0.01% |
19,100
-71,200
| -79% | -$4.01M |
|
2456
CALL
Surgery Partners
SGRY
$2.06B
| $1M | ﹤0.01% |
+36,100
| New | +$956K |
|
2457
CALL
U-Haul Holding Co Series N
UHAL.B
$12.2B
| $1M | ﹤0.01% |
+17,000
| New | +$984K |
|
2458
BioNTech
BNTX
$22.6B
| $1M | ﹤0.01% |
6,683
+6,676
| +95,371% | +$1.03M |
|
|
ATCO
2459
PUT
DELISTED
Atlas Corp.
ATCO
| $1M | ﹤0.01% |
65,400
-180,000
| -73% | -$2.72M |
|
|
RAM
2460
DELISTED
Aries I Acquisition Corporation Class A Ordinary Share
RAM
| $1M | ﹤0.01% |
97,496
+14,350
| +17% | +$147K |
|
2461
CALL
Levi Strauss
LEVI
$9.44B
| $999K | ﹤0.01% |
64,400
-46,900
| -42% | -$729K |
|
2462
PUT
Tapestry
TPR
$28.8B
| $997K | ﹤0.01% |
26,200
-57,000
| -69% | -$1.95M |
|
|
VRN
2463
CALL
DELISTED
Veren
VRN
| $997K | ﹤0.01% |
139,500
-12,900
| -8% | -$95.7K |
|
2464
CALL
Credit Acceptance
CACC
$6B
| $996K | ﹤0.01% |
2,100
-500
| -19% | -$229K |
|
2465
CALL
DHT Holdings
DHT
$2.97B
| $994K | ﹤0.01% |
112,000
+10,700
| +11% | +$97.3K |
|
2466
CALL
Everest Group
EG
$15.2B
| $993K | ﹤0.01% |
3,000
-3,100
| -51% | -$966K |
|
2467
HP
HPQ
$23.5B
| $993K | ﹤0.01% |
36,977
+25,261
| +216% | +$699K |
|
|
WWE
2468
DELISTED
World Wrestling Entertainment
WWE
| $992K | ﹤0.01% |
+14,480
| New | +$1.09M |
|
2469
CALL
Groupon
GRPN
$980M
| $990K | ﹤0.01% |
115,400
-125,000
| -52% | -$968K |
|
2470
CALL
Lufax Holding
LU
$1.2B
| $990K | ﹤0.01% |
127,650
+82,275
| +181% | +$627K |
|
2471
PUT
Nu Holdings
NU
$68.1B
| $990K | ﹤0.01% |
243,400
-316,900
| -57% | -$1.38M |
|
2472
Louisiana-Pacific
LPX
$5.2B
| $989K | ﹤0.01% |
16,721
+10,816
| +183% | +$638K |
|
|
HIBB
2473
PUT
DELISTED
Hibbett, Inc. Common Stock
HIBB
| $989K | ﹤0.01% |
14,500
-6,200
| -30% | -$387K |
|
2474
PUT
GoDaddy
GDDY
$12.3B
| $987K | ﹤0.01% |
13,200
-90,000
| -87% | -$6.75M |
|
|
PINC
2475
DELISTED
Premier
PINC
| $987K | ﹤0.01% |
28,230
+28,006
| +12,503% | +$933K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.