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 | |
|---|---|---|---|---|---|---|
3076
PUT
Target Hospitality
TH
$1.6B
| $860K | ﹤0.01% |
98,800
-127,400
| -56% | -$1.33M |
|
3077
PUT
Parsons
PSN
$6.36B
| $859K | ﹤0.01% |
10,500
+2,900
| +38% | +$227K |
|
3078
CALL
Agios Pharmaceuticals
AGIO
$2.2B
| $858K | ﹤0.01% |
19,900
-13,400
| -40% | -$484K |
|
3079
YieldMax COIN Option Income Strategy ETF
CONY
$358M
| $858K | ﹤0.01% |
4,213
+3,262
| +343% | +$758K |
|
3080
CALL
Saic
SAIC
$5.01B
| $858K | ﹤0.01% |
7,300
+1,300
| +22% | +$165K |
|
|
HBI
3081
PUT
DELISTED
Hanesbrands
HBI
| $856K | ﹤0.01% |
173,700
+1,600
| +0.9% | +$7.84K |
|
|
JNPR
3082
CALL
DELISTED
Juniper Networks
JNPR
| $856K | ﹤0.01% |
23,500
+1,200
| +5% | +$42.6K |
|
3083
Taboola.com
TBLA
$1.35B
| $856K | ﹤0.01% |
249,044
+77,074
| +45% | +$311K |
|
3084
CALL
United Microelectronic
UMC
$47.9B
| $855K | ﹤0.01% |
97,700
-22,400
| -19% | -$185K |
|
3085
Coeur Mining
CDE
$15.8B
| $853K | ﹤0.01% |
151,787
-96,147
| -39% | -$496K |
|
3086
CALL
Sprinklr
CXM
$1.42B
| $853K | ﹤0.01% |
88,700
+68,400
| +337% | +$764K |
|
|
TPIC
3087
PUT
DELISTED
TPI Composites
TPIC
| $853K | ﹤0.01% |
214,000
+1,700
| +0.8% | +$6.54K |
|
3088
CALL
Unum
UNM
$13.8B
| $853K | ﹤0.01% |
16,700
-8,600
| -34% | -$445K |
|
3089
ARK Innovation ETF
ARKK
$5.74B
| $852K | ﹤0.01% |
19,389
+3,344
| +21% | +$149K |
|
3090
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$161M
| $849K | ﹤0.01% |
+19,448
| New | +$969K |
|
3091
PUT
Tecnoglass
TGLS
$2.01B
| $848K | ﹤0.01% |
16,900
+6,000
| +55% | +$313K |
|
|
ENLC
3092
CALL
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $847K | ﹤0.01% |
61,600
+23,200
| +60% | +$310K |
|
3093
CALL
Leonardo DRS
DRS
$12.9B
| $846K | ﹤0.01% |
33,200
-42,300
| -56% | -$968K |
|
3094
CALL
Gentex
GNTX
$4.88B
| $846K | ﹤0.01% |
25,100
+23,500
| +1,469% | +$811K |
|
3095
CALL
Planet Fitness
PLNT
$4.29B
| $846K | ﹤0.01% |
11,500
-199,700
| -95% | -$13M |
|
3096
PUT
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$254M
| $846K | ﹤0.01% |
40,400
+29,800
| +281% | +$509K |
|
|
JMIA
3097
PUT
Jumia Technologies
JMIA
$752M
| $845K | ﹤0.01% |
120,400
-6,400
| -5% | -$39.4K |
|
3098
Ecolab
ECL
$76.4B
| $844K | ﹤0.01% |
3,549
+2,770
| +356% | +$640K |
|
3099
CALL
LendingTree
TREE
$564M
| $844K | ﹤0.01% |
20,300
+3,600
| +22% | +$152K |
|
3100
PUT
Weatherford International
WFRD
$6.16B
| $844K | ﹤0.01% |
6,900
-32,400
| -82% | -$3.87M |
|
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.