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 | |
|---|---|---|---|---|---|---|
826
CALL
McKesson
MCK
$98.5B
| $9.26M | 0.01% |
28,400
+13,700
| +93% | +$4.38M |
|
|
IAA
827
CALL
DELISTED
IAA, Inc. Common Stock
IAA
| $9.26M | 0.01% |
282,700
+19,300
| +7% | +$707K |
|
828
PUT
Planet Fitness
PLNT
$4.23B
| $9.26M | 0.01% |
136,100
+48,100
| +55% | +$3.55M |
|
829
PUT
Thor Industries
THO
$3.99B
| $9.24M | 0.01% |
123,700
+61,300
| +98% | +$4.75M |
|
830
CALL
Marathon Digital Holdings
MARA
$4.62B
| $9.21M | 0.01% |
1,724,300
+673,700
| +64% | +$9.01M |
|
831
CALL
DigitalOcean
DOCN
$14.4B
| $9.14M | 0.01% |
221,100
+99,800
| +82% | +$4.45M |
|
832
Datadog
DDOG
$87.9B
| $9.1M | 0.01% |
95,574
+78,103
| +447% | +$8.58M |
|
833
CALL
Vanguard Consumer Discretionary ETF
VCR
$5.84B
| $9.1M | 0.01% |
60,100
+22,400
| +59% | +$5.85M |
|
834
CALL
Parker-Hannifin
PH
$125B
| $9.08M | 0.01% |
36,900
+32,100
| +669% | +$8.59M |
|
|
JWN
835
PUT
DELISTED
Nordstrom
JWN
| $9.07M | 0.01% |
429,500
+89,200
| +26% | +$2.28M |
|
836
CALL
Blackrock
BLK
$164B
| $9.07M | 0.01% |
14,900
-16,200
| -52% | -$10.5M |
|
|
CLR
837
CALL
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $9.06M | 0.01% |
138,700
+77,500
| +127% | +$4.91M |
|
838
CALL
Schwab US Broad Market ETF
SCHB
$42.8B
| $9.06M | 0.01% |
453,000
+202,500
| +81% | +$3.25M |
|
|
SWCH
839
CALL
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $9.04M | 0.01% |
269,800
+68,500
| +34% | +$2.21M |
|
840
CALL
Academy Sports + Outdoors
ASO
$2.89B
| $9.04M | 0.01% |
254,300
-165,500
| -39% | -$6.06M |
|
841
PUT
Simon Property Group
SPG
$74.5B
| $9.02M | 0.01% |
95,000
-107,500
| -53% | -$12.3M |
|
842
PUT
Eaton
ETN
$157B
| $8.99M | 0.01% |
71,400
+34,500
| +93% | +$4.83M |
|
843
PUT
Five Below
FIVE
$11.2B
| $8.99M | 0.01% |
79,300
-39,800
| -33% | -$5.72M |
|
|
ZEN
844
DELISTED
ZENDESK INC
ZEN
| $8.99M | 0.01% |
121,368
+85,012
| +234% | +$8.38M |
|
845
CALL
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.5M
| $8.98M | 0.01% |
541,300
-157,300
| -23% | -$14.7M |
|
846
CALL
Ball Corp
BALL
$17B
| $8.98M | 0.01% |
130,600
+112,700
| +630% | +$8.55M |
|
847
CALL
Humana
HUM
$46.7B
| $8.94M | 0.01% |
19,100
-5,300
| -22% | -$2.36M |
|
848
CALL
Zebra Technologies
ZBRA
$12.4B
| $8.94M | 0.01% |
30,400
+14,200
| +88% | +$4.94M |
|
|
MPT
849
CALL
Medical Properties Trust
MPT
$2.89B
| $8.93M | 0.01% |
584,700
+434,800
| +290% | +$7.82M |
|
850
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $8.9M | 0.01% |
91,800
+56,400
| +159% | +$5.56M |
|
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.