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 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5676
CALL
AXIS Capital
AXS
$7.68B
| $91K | ﹤0.01% |
1,600
+1,500
| +1,500% | +$85.5K |
|
5677
Concrete Pumping Holdings
BBCP
$490M
| $91K | ﹤0.01% |
15,022
-1,554
| -9% | -$8.82K |
|
5678
CALL
Brink's
BCO
$4.88B
| $91K | ﹤0.01% |
1,500
+1,100
| +275% | +$66.2K |
|
5679
Clearwater Paper
CLW
$339M
| $91K | ﹤0.01% |
2,718
+900
| +50% | +$28.2K |
|
5680
PUT
Compass
COMP
$8.51B
| $91K | ﹤0.01% |
25,400
-26,400
| -51% | -$144K |
|
5681
Dine Brands
DIN
$456M
| $91K | ﹤0.01% |
+1,412
| New | +$101K |
|
5682
CALL
Embecta
EMBC
$216M
| $91K | ﹤0.01% |
+3,600
| New | +$104K |
|
5683
Jabil
JBL
$33B
| $91K | ﹤0.01% |
+1,790
| New | +$104K |
|
5684
CALL
Centrus Energy
LEU
$3.48B
| $91K | ﹤0.01% |
3,700
-34,800
| -90% | -$961K |
|
|
DFTX
5685
PUT
Definium Therapeutics
DFTX
$5.78B
| $91K | ﹤0.01% |
9,520
+2,513
| +36% | +$31.8K |
|
5686
CALL
RCM Technologies
RCMT
$201M
| $91K | ﹤0.01% |
4,500
+2,800
| +165% | +$52.9K |
|
5687
PUT
Recursion Pharmaceuticals
RXRX
$1.59B
| $91K | ﹤0.01% |
11,300
+2,200
| +24% | +$14.7K |
|
|
FIRY
5688
PUT
Firy Inc
FIRY
$148M
| $91K | ﹤0.01% |
3,670
-3,430
| -48% | -$134K |
|
5689
TripAdvisor
TRIP
$1.65B
| $91K | ﹤0.01% |
5,154
-6,071
| -54% | -$144K |
|
5690
CALL
Weatherford International
WFRD
$6.29B
| $91K | ﹤0.01% |
4,300
-200
| -4% | -$6.37K |
|
|
TFFP
5691
CALL
DELISTED
TFF Pharmaceuticals, Inc. Common Stock
TFFP
| $91K | ﹤0.01% |
648
+160
| +33% | +$22.3K |
|
|
TWNK
5692
DELISTED
Hostess Brands, Inc. Class A Common Stock
TWNK
| $91K | ﹤0.01% |
4,317
+2,970
| +220% | +$64.3K |
|
|
FSTX
5693
CALL
DELISTED
F-star Therapeutics, Inc. Common Stock
FSTX
| $91K | ﹤0.01% |
14,600
-4,400
| -23% | -$14.8K |
|
5694
PUT
Aldeyra Therapeutics
ALDX
$92.9M
| $90K | ﹤0.01% |
22,700
-391,000
| -95% | -$1.34M |
|
5695
PUT
CoStar Group
CSGP
$11.7B
| $90K | ﹤0.01% |
1,500
-43,000
| -97% | -$2.6M |
|
5696
Ecovyst
ECVT
$1.32B
| $90K | ﹤0.01% |
9,210
-7,110
| -44% | -$73.9K |
|
|
FPI
5697
Farmland Partners
FPI
$408M
| $90K | ﹤0.01% |
6,531
-32,337
| -83% | -$471K |
|
5698
Fusion Fuel Green
HTOO
$18.7M
| $90K | ﹤0.01% |
397
-355
| -47% | -$99.2K |
|
5699
CALL
Immunic
IMUX
$190M
| $90K | ﹤0.01% |
2,600
-10,770
| -81% | -$690K |
|
5700
PUT
NewMarket
NEU
$7.82B
| $90K | ﹤0.01% |
300
+100
| +50% | +$32.3K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.