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 | |
|---|---|---|---|---|---|---|
|
FARM
8026
CALL
DELISTED
Farmer Brothers
FARM
| $13K | ﹤0.01% |
2,900
+100
| +4% | +$565 |
|
8027
CALL
Glaukos
GKOS
$9.49B
| $13K | ﹤0.01% |
300
-19,700
| -99% | -$935K |
|
8028
State Street SPDR S&P Global Natural Resources ETF
GNR
$4.75B
| $13K | ﹤0.01% |
263
-337
| -56% | -$20.2K |
|
8029
CALL
Haemonetics
HAE
$3.88B
| $13K | ﹤0.01% |
200
-2,200
| -92% | -$130K |
|
8030
CALL
Healthcare Services Group
HCSG
$1.61B
| $13K | ﹤0.01% |
800
-6,200
| -89% | -$107K |
|
8031
CALL
Helios Technologies
HLIO
$2.47B
| $13K | ﹤0.01% |
200
+100
| +100% | +$6.93K |
|
8032
CALL
HNI Corp
HNI
$3.08B
| $13K | ﹤0.01% |
400
+200
| +100% | +$7.26K |
|
8033
InvenTrust Properties
IVT
$2.79B
| $13K | ﹤0.01% |
+517
| New | +$15.1K |
|
8034
Invivyd
IVVD
$160M
| $13K | ﹤0.01% |
4,107
-69,094
| -94% | -$217K |
|
|
JFIN
8035
Jiayin Group
JFIN
$115M
| $13K | ﹤0.01% |
6,022
+404
| +7% | +$830 |
|
8036
CALL
The Joint Corp
JYNT
$119M
| $13K | ﹤0.01% |
900
-15,800
| -95% | -$353K |
|
8037
PUT
Kelly Services Class A
KELYA
$548M
| $13K | ﹤0.01% |
700
-4,600
| -87% | -$90.3K |
|
8038
CALL
Lineage Cell Therapeutics
LCTX
$264M
| $13K | ﹤0.01% |
8,600
+3,700
| +76% | +$4.88K |
|
|
LX
8039
LexinFintech Holdings
LX
$246M
| $13K | ﹤0.01% |
5,983
-67,795
| -92% | -$157K |
|
8040
CALL
Metropolitan Bank Holding Corp
MCB
$1.15B
| $13K | ﹤0.01% |
200
+100
| +100% | +$8.28K |
|
|
MCW
8041
DELISTED
Mister Car Wash
MCW
| $13K | ﹤0.01% |
1,245
-933
| -43% | -$12.1K |
|
|
ONT
8042
PUT
Onterris Inc
ONT
$731M
| $13K | ﹤0.01% |
400
| – | – |
|
8043
Monro
MNRO
$414M
| $13K | ﹤0.01% |
+309
| New | +$13.8K |
|
8044
CALL
MGIC Investment
MTG
$6.47B
| $13K | ﹤0.01% |
1,100
-2,100
| -66% | -$27.6K |
|
8045
CALL
Manitowoc
MTW
$491M
| $13K | ﹤0.01% |
1,300
+800
| +160% | +$10K |
|
8046
PUT
National Healthcare
NHC
$3.57B
| $13K | ﹤0.01% |
200
-100
| -33% | -$7K |
|
8047
Nerdy
NRDY
$108M
| $13K | ﹤0.01% |
6,550
+2,160
| +49% | +$7.03K |
|
8048
OceanFirst Financial
OCFC
$1.71B
| $13K | ﹤0.01% |
722
-42
| -5% | -$805 |
|
8049
PUT
OneWater Marine
ONEW
$211M
| $13K | ﹤0.01% |
400
+300
| +300% | +$10K |
|
8050
CALL
Phathom Pharmaceuticals
PHAT
$928M
| $13K | ﹤0.01% |
1,600
-1,700
| -52% | -$17.5K |
|
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.