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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5076
CALL
TriplePoint Venture Growth BDC
TPVG
$185M
| $107K | ﹤0.01% |
8,900
+3,600
| +68% | +$42K |
|
5077
Travere Therapeutics
TVTX
$5.33B
| $107K | ﹤0.01% |
+4,793
| New | +$102K |
|
|
CEQP
5078
PUT
DELISTED
Crestwood Equity Partners LP
CEQP
| $107K | ﹤0.01% |
4,300
+300
| +8% | +$7.73K |
|
|
RIDE
5079
CALL
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $107K | ﹤0.01% |
10,787
-9,746
| -47% | -$154K |
|
|
AL
5080
CALL
DELISTED
Air Lease Corp
AL
| $106K | ﹤0.01% |
2,700
-4,400
| -62% | -$184K |
|
5081
CALL
Axalta
AXTA
$7.71B
| $106K | ﹤0.01% |
3,500
-34,500
| -91% | -$991K |
|
5082
CALL
Bankunited
BKU
$3.33B
| $106K | ﹤0.01% |
+4,700
| New | +$153K |
|
5083
PUT
Blue Bird Corp
BLBD
$2.36B
| $106K | ﹤0.01% |
5,200
+4,900
| +1,633% | +$87.4K |
|
5084
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$77.8M
| $106K | ﹤0.01% |
900
-76,500
| -99% | -$8.94M |
|
|
HIVE
5085
PUT
HIVE Digital Technologies
HIVE
$802M
| $106K | ﹤0.01% |
32,300
-28,700
| -47% | -$85.3K |
|
5086
Direxion Daily MSCI India Bull 2X ETF
INDL
$56.7M
| $106K | ﹤0.01% |
+2,677
| New | +$113K |
|
5087
CALL
Kopin
KOPN
$663M
| $106K | ﹤0.01% |
97,500
+24,900
| +34% | +$30.4K |
|
|
LTC
5088
LTC Properties
LTC
$2.06B
| $106K | ﹤0.01% |
3,019
+1,346
| +80% | +$48.4K |
|
|
OGI
5089
CALL
Organigram Holdings
OGI
$136M
| $106K | ﹤0.01% |
41,675
+4,100
| +11% | +$13K |
|
5090
PUT
Portillo's
PTLO
$334M
| $106K | ﹤0.01% |
5,000
+3,400
| +213% | +$71.4K |
|
|
FLNA
5091
Filana Therapeutics
FLNA
$46.4M
| $106K | ﹤0.01% |
+4,400
| New | +$122K |
|
|
HYZN
5092
CALL
DELISTED
Hyzon Motors Inc. Class A Common Stock
HYZN
| $106K | ﹤0.01% |
2,602
+434
| +20% | +$32.4K |
|
5093
PUT
Krispy Kreme
DNUT
$553M
| $105K | ﹤0.01% |
6,800
-4,600
| -40% | -$59.6K |
|
5094
Domo
DOMO
$174M
| $105K | ﹤0.01% |
7,425
+3,621
| +95% | +$51K |
|
5095
CALL
Mayville Engineering Co
MEC
$660M
| $105K | ﹤0.01% |
+7,100
| New | +$103K |
|
5096
PUT
Manitowoc
MTW
$497M
| $105K | ﹤0.01% |
6,200
+5,600
| +933% | +$83.9K |
|
5097
PUT
McEwen Inc
MUX
$1.06B
| $105K | ﹤0.01% |
12,400
-4,000
| -24% | -$27.6K |
|
5098
Energy Vault
NRGV
$513M
| $105K | ﹤0.01% |
49,381
+24,085
| +95% | +$82.1K |
|
5099
Uranium Energy
UEC
$4.82B
| $105K | ﹤0.01% |
+36,697
| New | +$133K |
|
|
BECN
5100
PUT
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $105K | ﹤0.01% |
1,800
+100
| +6% | +$5.85K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.