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 |
Alibaba
BABA
|
+$120M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$93.9M |
| 3 |
Walt Disney
DIS
|
+$71.7M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.7M |
| 5 |
Citigroup
C
|
+$39.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$136M |
| 2 |
Amazon
AMZN
|
+$118M |
| 3 |
SPDR Gold Trust
GLD
|
+$56.2M |
| 4 |
Microsoft
MSFT
|
+$52.4M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$45.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.33% |
| 2 | Consumer Discretionary | 0.3% |
| 3 | Communication Services | 0.21% |
| 4 | Financials | 0.19% |
| 5 | Healthcare | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TE
5801
PUT
T1 Energy
TE
$1.15B
| $67K | ﹤0.01% |
36,300
-15,700
| -30% | -$42.4K |
|
|
EVA
5802
DELISTED
Enviva Inc.
EVA
| $67K | ﹤0.01% |
+67,948
| New | +$189K |
|
|
POTX
5803
DELISTED
Global X Cannabis ETF
POTX
| $67K | ﹤0.01% |
+11,514
| New | +$65.6K |
|
|
MNTX
5804
PUT
DELISTED
Manitex International, Inc.
MNTX
| $67K | ﹤0.01% |
+7,700
| New | +$46.4K |
|
5805
ADMA Biologics
ADMA
$1.97B
| $66K | ﹤0.01% |
14,714
+13,021
| +769% | +$48.2K |
|
5806
American Financial Group
AFG
$11.7B
| $66K | ﹤0.01% |
558
+108
| +24% | +$12.2K |
|
5807
CALL
Ameresco
AMRC
$1.1B
| $66K | ﹤0.01% |
2,100
-6,700
| -76% | -$202K |
|
5808
Global X Blockchain & Bitcoin Strategy ETF
BITS
$23.9M
| $66K | ﹤0.01% |
1,248
-48
| -4% | -$2.1K |
|
5809
PUT
Vanguard Total Bond Market
BND
$157B
| $66K | ﹤0.01% |
1,000
-2,500
| -71% | -$177K |
|
5810
CALL
BRC Inc
BRCC
$119M
| $66K | ﹤0.01% |
18,400
+5,100
| +38% | +$17.6K |
|
5811
Compass
COMP
$8.57B
| $66K | ﹤0.01% |
17,662
-24,674
| -58% | -$60.9K |
|
5812
Direxion Daily Real Estate Bear 3X ETF
DRV
$26.7M
| $66K | ﹤0.01% |
+1,943
| New | +$101K |
|
5813
PUT
Eastern Bankshares
EBC
$5.25B
| $66K | ﹤0.01% |
4,700
-12,600
| -73% | -$157K |
|
5814
PUT
Encompass Health
EHC
$10.9B
| $66K | ﹤0.01% |
1,000
+800
| +400% | +$51.8K |
|
5815
CALL
Forestar Group
FOR
$1.45B
| $66K | ﹤0.01% |
+2,000
| New | +$58K |
|
5816
CALL
Huazhu Hotels Group
HTHT
$12.9B
| $66K | ﹤0.01% |
2,000
-700
| -26% | -$25K |
|
|
5817
PUT
Huazhu Hotels Group
HTHT
$12.9B
| $66K | ﹤0.01% |
2,000
+1,700
| +567% | +$60.8K |
|
|
MITT
5818
PUT
TPG Mortgage Investment Trust
MITT
$223M
| $66K | ﹤0.01% |
10,700
-34,100
| -76% | -$185K |
|
5819
PUT
Global X MSCI Norway ETF
NORW
$87.4M
| $66K | ﹤0.01% |
3,900
+3,400
| +680% | +$82K |
|
5820
Orion
OEC
$367M
| $66K | ﹤0.01% |
2,392
-2,387
| -50% | -$54.8K |
|
5821
PUT
PTC Therapeutics
PTCT
$5.92B
| $66K | ﹤0.01% |
2,400
-500
| -17% | -$11.4K |
|
5822
PUT
Sun Communities
SUI
$15.2B
| $66K | ﹤0.01% |
500
-900
| -64% | -$108K |
|
|
HYZN
5823
CALL
DELISTED
Hyzon Motors Inc. Class A Common Stock
HYZN
| $66K | ﹤0.01% |
1,478
-604
| -29% | -$30.1K |
|
|
ALLK
5824
DELISTED
Allakos
ALLK
| $65K | ﹤0.01% |
+24,086
| New | +$54.3K |
|
5825
PUT
American Vanguard Corp
AVD
$70.4M
| $65K | ﹤0.01% |
6,000
+3,800
| +173% | +$37.9K |
|
Similar funds
Simplex Trading's Q4 2023 Portfolio in Review
As of Q4 2023, Simplex Trading held 10,333 positions worth $156B, up 23% from $127B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading deployed $15.1B of net new capital in Q4 2023, opening 1,639 new positions and adding to 3,920 existing holdings. Its largest new stake was Walt Disney: 812,984 shares worth $73.4M.
By sector, the portfolio is most concentrated in Technology at 0.33% of assets, down from 0.44% a quarter earlier, followed by Consumer Discretionary and Communication Services.
On the sell side, the largest reduction was iShares 20+ Year Treasury Bond ETF, an estimated $136M trimmed.
- Simplex Trading's largest Q4 2023 buy was Walt Disney: 812,984 shares worth $73.4M.
- Simplex Trading added most to Alibaba in Q4 2023, an estimated $120M increase.
- Simplex Trading's biggest Q4 2023 reduction was iShares 20+ Year Treasury Bond ETF, cutting an estimated $136M.
- Simplex Trading fully exited Amazon in Q4 2023, selling an estimated $118M.
- Simplex Trading's ten largest holdings make up 42% of its $156B portfolio in Q4 2023.
- Simplex Trading opened 1,639 new positions and closed 1,508 in Q4 2023.
- Simplex Trading's portfolio value rose 23% quarter-over-quarter to $156B.
Based on Simplex Trading's 13F filing for Q4 2023, filed 2 Feb 2024.