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 | |
|---|---|---|---|---|---|---|
5001
CALL
Keros Therapeutics
KROS
$197M
| $141K | ﹤0.01% |
3,100
-1,900
| -38% | -$102K |
|
5002
CALL
Myriad Genetics
MYGN
$476M
| $141K | ﹤0.01% |
5,800
+1,800
| +45% | +$39.5K |
|
5003
CALL
Polestar Automotive Holding UK
PSNY
$1.97B
| $141K | ﹤0.01% |
6,013
-4,507
| -43% | -$151K |
|
5004
Banco Bradesco
BBD
$37.4B
| $140K | ﹤0.01% |
62,516
-252,434
| -80% | -$653K |
|
|
DOO
5005
PUT
Bombardier Recreational Products
DOO
$4.48B
| $140K | ﹤0.01% |
2,200
-900
| -29% | -$60.7K |
|
5006
PUT
Kayne Anderson Energy Infrastructure Fund
KYN
$2.42B
| $140K | ﹤0.01% |
+13,600
| New | +$134K |
|
5007
CALL
Saratoga Investment
SAR
$309M
| $140K | ﹤0.01% |
6,200
+4,200
| +210% | +$97.9K |
|
5008
PUT
Vaalco Energy
EGY
$562M
| $139K | ﹤0.01% |
22,200
+15,100
| +213% | +$97.3K |
|
5009
PUT
EverQuote
EVER
$949M
| $139K | ﹤0.01% |
6,700
-13,000
| -66% | -$275K |
|
5010
IDT Corp
IDT
$1.67B
| $139K | ﹤0.01% |
3,884
+3,260
| +522% | +$123K |
|
5011
CALL
IMAX
IMAX
$2.67B
| $139K | ﹤0.01% |
8,300
-20,100
| -71% | -$332K |
|
5012
PUT
Ryman Hospitality Properties
RHP
$8.56B
| $139K | ﹤0.01% |
1,400
+900
| +180% | +$94.9K |
|
|
SFBS
5013
CALL
ServisFirst Bancshares
SFBS
$4.9B
| $139K | ﹤0.01% |
2,200
-100
| -4% | -$6.17K |
|
5014
CALL
Vicor
VICR
$8.33B
| $139K | ﹤0.01% |
4,200
-5,500
| -57% | -$190K |
|
5015
CALL
Ambev
ABEV
$47.9B
| $138K | ﹤0.01% |
67,500
+34,200
| +103% | +$77.9K |
|
5016
PUT
Cabaletta Bio
CABA
$427M
| $138K | ﹤0.01% |
18,500
+11,000
| +147% | +$135K |
|
5017
C.H. Robinson
CHRW
$20.5B
| $138K | ﹤0.01% |
+1,572
| New | +$126K |
|
5018
CALL
Cavco Industries
CVCO
$4.36B
| $138K | ﹤0.01% |
+400
| New | +$146K |
|
5019
Cushman & Wakefield Ltd
CWK
$3.16B
| $138K | ﹤0.01% |
13,320
-17,005
| -56% | -$176K |
|
5020
CALL
Ichor Holdings
ICHR
$2.17B
| $138K | ﹤0.01% |
3,600
| – | – |
|
5021
Liberty Latin America Class C
LILAK
$1.69B
| $138K | ﹤0.01% |
15,835
-3,162
| -17% | -$23.6K |
|
|
LTC
5022
PUT
LTC Properties
LTC
$2.13B
| $138K | ﹤0.01% |
4,000
-1,600
| -29% | -$53.3K |
|
5023
MillerKnoll
MLKN
$1.56B
| $138K | ﹤0.01% |
5,246
+2,263
| +76% | +$59.5K |
|
5024
Omeros
OMER
$845M
| $138K | ﹤0.01% |
34,073
-38,404
| -53% | -$137K |
|
5025
CALL
Zumiez
ZUMZ
$330M
| $138K | ﹤0.01% |
7,100
-11,600
| -62% | -$201K |
|
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.