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 | |
|---|---|---|---|---|---|---|
5351
PUT
LegalZoom.com
LZ
$1.35B
| $117K | ﹤0.01% |
10,700
+3,300
| +45% | +$43.6K |
|
5352
CALL
Omeros
OMER
$857M
| $117K | ﹤0.01% |
42,800
+8,300
| +24% | +$28.1K |
|
5353
Phreesia
PHR
$663M
| $117K | ﹤0.01% |
+4,687
| New | +$103K |
|
5354
PUT
QuickLogic
QUIK
$232M
| $117K | ﹤0.01% |
13,900
-1,600
| -10% | -$9.93K |
|
5355
PUT
RB Global
RBA
$20.4B
| $117K | ﹤0.01% |
1,800
-1,200
| -40% | -$70.4K |
|
5356
CALL
Tronox
TROX
$932M
| $117K | ﹤0.01% |
7,000
-12,200
| -64% | -$221K |
|
5357
CALL
Dentsply Sirona
XRAY
$2.68B
| $117K | ﹤0.01% |
3,300
+1,800
| +120% | +$72.8K |
|
|
CLVR
5358
CALL
DELISTED
Clever Leaves Holdings Inc. Common Shares
CLVR
| $117K | ﹤0.01% |
4,007
+1,537
| +62% | +$61.4K |
|
5359
PUT
Absci
ABSI
$1.32B
| $116K | ﹤0.01% |
35,000
+16,300
| +87% | +$81K |
|
5360
CALL
Arcos Dorados Holdings
ARCO
$1.72B
| $116K | ﹤0.01% |
17,300
+7,100
| +70% | +$52.4K |
|
5361
PUT
Essential Properties Realty Trust
EPRT
$6.77B
| $116K | ﹤0.01% |
5,400
+2,600
| +93% | +$60.5K |
|
5362
CALL
Globus Maritime Ltd
GLBS
$61.9M
| $116K | ﹤0.01% |
66,600
+800
| +1% | +$1.71K |
|
|
NIU
5363
CALL
Niu Technologies
NIU
$203M
| $116K | ﹤0.01% |
13,500
+4,200
| +45% | +$35.5K |
|
5364
CALL
Oscar Health
OSCR
$9.41B
| $116K | ﹤0.01% |
27,400
-47,100
| -63% | -$300K |
|
5365
State Street SPDR Portfolio Long Term Treasury ETF
SPTL
$10.4B
| $116K | ﹤0.01% |
3,520
-4,310
| -55% | -$146K |
|
5366
PUT
Sterling Infrastructure
STRL
$18.3B
| $116K | ﹤0.01% |
5,300
+3,100
| +141% | +$74.5K |
|
|
SVM
5367
Silvercorp Metals
SVM
$2.07B
| $116K | ﹤0.01% |
46,960
+44,109
| +1,547% | +$133K |
|
|
AFIB
5368
DELISTED
Acutus Medical Inc
AFIB
| $116K | ﹤0.01% |
103,997
+52,390
| +102% | +$45K |
|
|
CCV
5369
CALL
DELISTED
Churchill Capital Corp V
CCV
| $116K | ﹤0.01% |
11,900
-49,500
| -81% | -$486K |
|
5370
Arrowhead Research
ARWR
$11.9B
| $115K | ﹤0.01% |
3,270
+722
| +28% | +$27.2K |
|
5371
CALL
Bioceres Crop Solutions
BIOX
$23M
| $115K | ﹤0.01% |
8,400
+5,600
| +200% | +$74.3K |
|
5372
PUT
BWX Technologies
BWXT
$15.5B
| $115K | ﹤0.01% |
2,100
-36,900
| -95% | -$1.92M |
|
5373
Dorman Products
DORM
$3.98B
| $115K | ﹤0.01% |
1,051
-116
| -10% | -$11.5K |
|
5374
CALL
Oppenheimer Holdings
OPY
$1.14B
| $115K | ﹤0.01% |
3,500
+2,100
| +150% | +$72.1K |
|
|
SEM
5375
PUT
DELISTED
Select Medical
SEM
| $115K | ﹤0.01% |
9,094
+5,196
| +133% | +$66.7K |
|
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.