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 | |
|---|---|---|---|---|---|---|
2601
CALL
Healthcare Realty
HR
$7.42B
| $1.35M | ﹤0.01% |
81,800
-186,900
| -70% | -$2.86M |
|
2602
CALL
FuboTV Inc
FUBO
$245M
| $1.35M | ﹤0.01% |
90,558
+41,158
| +83% | +$659K |
|
2603
PUT
Vital Farms
VITL
$558M
| $1.35M | ﹤0.01% |
28,800
+28,200
| +4,700% | +$973K |
|
2604
Spotify
SPOT
$99.2B
| $1.34M | ﹤0.01% |
4,279
-1,218
| -22% | -$367K |
|
|
GOEV
2605
PUT
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $1.34M | ﹤0.01% |
31,515
+6,670
| +27% | +$326K |
|
2606
CALL
Coty
COTY
$2.33B
| $1.34M | ﹤0.01% |
133,700
-20,200
| -13% | -$216K |
|
2607
PUT
Return Stacked Bonds & Managed Futures ETF
RSBT
$137M
| $1.34M | ﹤0.01% |
81,600
+31,000
| +61% | +$563K |
|
2608
PUT
Aspen Aerogels
ASPN
$387M
| $1.34M | ﹤0.01% |
56,100
+33,400
| +147% | +$784K |
|
2609
PUT
Magnite
MGNI
$2.65B
| $1.33M | ﹤0.01% |
100,500
+67,700
| +206% | +$740K |
|
|
PRA
2610
PUT
DELISTED
ProAssurance
PRA
| $1.33M | ﹤0.01% |
109,300
-8,400
| -7% | -$114K |
|
2611
PUT
IonQ
IONQ
$12.3B
| $1.33M | ﹤0.01% |
189,800
-146,100
| -43% | -$1.2M |
|
|
JMIA
2612
CALL
Jumia Technologies
JMIA
$726M
| $1.33M | ﹤0.01% |
189,900
-113,000
| -37% | -$696K |
|
2613
CALL
Parsons
PSN
$6.28B
| $1.33M | ﹤0.01% |
16,300
-36,000
| -69% | -$2.82M |
|
2614
CALL
Corpay
CPAY
$24.2B
| $1.33M | ﹤0.01% |
5,000
-3,700
| -43% | -$1.05M |
|
|
MAXN
2615
CALL
DELISTED
Maxeon Solar Technologies
MAXN
| $1.33M | ﹤0.01% |
15,600
+8,526
| +121% | +$1.81M |
|
|
SA
2616
Seabridge Gold
SA
$2.8B
| $1.33M | ﹤0.01% |
97,191
+24,039
| +33% | +$364K |
|
2617
Neurocrine Biosciences
NBIX
$17.7B
| $1.33M | ﹤0.01% |
+9,648
| New | +$1.32M |
|
2618
CALL
Rhythm Pharmaceuticals
RYTM
$7B
| $1.33M | ﹤0.01% |
32,300
+20,500
| +174% | +$818K |
|
2619
iShares TIPS Bond ETF
TIP
$14.5B
| $1.32M | ﹤0.01% |
+12,417
| New | +$1.32M |
|
2620
PUT
Viasat
VSAT
$9.79B
| $1.32M | ﹤0.01% |
104,200
+76,300
| +273% | +$1.22M |
|
2621
Fastly Inc
FSLY
$3.17B
| $1.32M | ﹤0.01% |
179,262
+24,374
| +16% | +$239K |
|
2622
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$247M
| $1.32M | ﹤0.01% |
37,271
-39,388
| -51% | -$1.52M |
|
|
SQSP
2623
CALL
DELISTED
Squarespace, Inc.
SQSP
| $1.32M | ﹤0.01% |
30,300
+300
| +1% | +$12K |
|
2624
CALL
ADT
ADT
$5.16B
| $1.32M | ﹤0.01% |
173,400
+135,500
| +358% | +$939K |
|
2625
Keysight
KEYS
$54.5B
| $1.32M | ﹤0.01% |
9,632
+4,756
| +98% | +$695K |
|
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.