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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1676
NIO
NIO
$11.3B
| $3.59M | ﹤0.01% |
862,777
-411,207
| -32% | -$1.95M |
|
1677
Tenet Healthcare
THC
$20.1B
| $3.59M | ﹤0.01% |
26,958
+15,256
| +130% | +$1.84M |
|
1678
PUT
Vanguard Short-Term Treasury ETF
VGSH
$29.3B
| $3.58M | ﹤0.01% |
62,100
+25,500
| +70% | +$1.47M |
|
1679
PUT
Hubbell
HUBB
$25.7B
| $3.58M | ﹤0.01% |
9,800
+9,600
| +4,800% | +$3.77M |
|
1680
PUT
Danaos Corp
DAC
$2.55B
| $3.56M | ﹤0.01% |
38,600
-95,000
| -71% | -$7.93M |
|
1681
PUT
Matador Resources
MTDR
$6.31B
| $3.56M | ﹤0.01% |
59,700
-53,600
| -47% | -$3.37M |
|
1682
PUT
Banc of California
BANC
$3.28B
| $3.56M | ﹤0.01% |
278,300
-12,000
| -4% | -$166K |
|
1683
PUT
Corcept Therapeutics
CORT
$10.2B
| $3.55M | ﹤0.01% |
109,300
+69,500
| +175% | +$1.9M |
|
1684
AB InBev
BUD
$158B
| $3.55M | ﹤0.01% |
61,009
+54,501
| +837% | +$3.34M |
|
|
BPMC
1685
CALL
DELISTED
Blueprint Medicines
BPMC
| $3.54M | ﹤0.01% |
32,900
+21,900
| +199% | +$2.19M |
|
1686
CALL
Willis Towers Watson
WTW
$27.9B
| $3.54M | ﹤0.01% |
13,500
+900
| +7% | +$232K |
|
1687
PUT
Stride
LRN
$3.69B
| $3.53M | ﹤0.01% |
50,100
+1,900
| +4% | +$127K |
|
1688
BlackLine
BL
$1.69B
| $3.52M | ﹤0.01% |
72,736
+54,307
| +295% | +$2.98M |
|
1689
CALL
CoreCivic
CXW
$3.1B
| $3.52M | ﹤0.01% |
271,500
+168,500
| +164% | +$2.46M |
|
1690
CALL
TG Therapeutics
TGTX
$8.58B
| $3.52M | ﹤0.01% |
198,100
-112,700
| -36% | -$1.8M |
|
1691
PUT
Immersion
IMMR
$216M
| $3.52M | ﹤0.01% |
373,900
-67,200
| -15% | -$582K |
|
1692
MSCI
MSCI
$40B
| $3.51M | ﹤0.01% |
+7,285
| New | +$3.61M |
|
1693
CALL
Toyota
TM
$210B
| $3.5M | ﹤0.01% |
17,100
-33,900
| -66% | -$7.5M |
|
1694
CALL
Kratos Defense & Security Solutions
KTOS
$8.88B
| $3.5M | ﹤0.01% |
175,000
+92,000
| +111% | +$1.8M |
|
1695
PUT
Canadian Pacific Kansas City
CP
$82B
| $3.5M | ﹤0.01% |
44,400
+26,000
| +141% | +$2.12M |
|
1696
CALL
Tidewater
TDW
$3.91B
| $3.49M | ﹤0.01% |
36,700
-19,200
| -34% | -$1.89M |
|
1697
PUT
Capri Holdings
CPRI
$1.77B
| $3.49M | ﹤0.01% |
105,600
-65,600
| -38% | -$2.37M |
|
1698
PUT
Mid-America Apartment Communities
MAA
$15.6B
| $3.49M | ﹤0.01% |
24,500
-4,000
| -14% | -$535K |
|
1699
NexGen Energy
NXE
$6.05B
| $3.49M | ﹤0.01% |
500,556
+412,286
| +467% | +$3.16M |
|
1700
PUT
Veralto
VLTO
$22.6B
| $3.48M | ﹤0.01% |
+36,400
| New | +$3.48M |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.