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 | |
|---|---|---|---|---|---|---|
8976
Keros Therapeutics
KROS
$199M
| $4K | ﹤0.01% |
+160
| New | +$7.02K |
|
8977
PUT
KULR Technology Group
KULR
$117M
| $4K | ﹤0.01% |
375
-1,000
| -73% | -$13.4K |
|
|
KZIA
8978
Kazia Therapeutics
KZIA
$140M
| $4K | ﹤0.01% |
20
-78
| -80% | -$23.9K |
|
8979
PUT
Standard BioTools
LAB
$326M
| $4K | ﹤0.01% |
3,100
-40,100
| -93% | -$99.2K |
|
8980
loanDepot
LDI
$548M
| $4K | ﹤0.01% |
2,878
-25,029
| -90% | -$67.5K |
|
|
8981
PUT
loanDepot
LDI
$548M
| $4K | ﹤0.01% |
2,800
-50,400
| -95% | -$136K |
|
|
LFT
8982
Lument Finance Trust
LFT
$41.9M
| $4K | ﹤0.01% |
1,932
+1,764
| +1,050% | +$4.54K |
|
8983
PUT
AEye
LIDR
$52.3M
| $4K | ﹤0.01% |
77
-183
| -70% | -$24.7K |
|
8984
CALL
LeMaitre Vascular
LMAT
$2.18B
| $4K | ﹤0.01% |
100
-900
| -90% | -$40.3K |
|
8985
First Trust Exchange-Traded Fund IV First Trust Low Duration Opportunities ETF
LMBS
$6.32B
| $4K | ﹤0.01% |
+100
| New | +$4.86K |
|
8986
Comstock
LODE
$228M
| $4K | ﹤0.01% |
670
-1,142
| -63% | -$11.4K |
|
8987
PUT
Mativ Holdings
MATV
$448M
| $4K | ﹤0.01% |
1,100
-2,600
| -70% | -$68.7K |
|
8988
PUT
Mueller Water Products
MWA
$3.92B
| $4K | ﹤0.01% |
400
-100
| -20% | -$1.2K |
|
8989
PUT
NN Inc
NNBR
$272M
| $4K | ﹤0.01% |
1,800
+1,300
| +260% | +$3.6K |
|
|
NOA
8990
North American Construction
NOA
$377M
| $4K | ﹤0.01% |
+412
| New | +$5.33K |
|
8991
Enviri
NVRI
$621M
| $4K | ﹤0.01% |
+683
| New | +$6.16K |
|
8992
Navitas Semiconductor
NVTS
$2.66B
| $4K | ﹤0.01% |
1,069
-6,927
| -87% | -$47.9K |
|
8993
CALL
Orion Energy Systems
OESX
$41.1M
| $4K | ﹤0.01% |
240
-330
| -58% | -$8.12K |
|
8994
ALPS O'Shares Global Internet Giants ETF
OGIG
$99.2M
| $4K | ﹤0.01% |
+163
| New | +$4.9K |
|
8995
PUT
Outset Medical
OM
$74.9M
| $4K | ﹤0.01% |
20
-313
| -94% | -$135K |
|
8996
Ooma
OOMA
$550M
| $4K | ﹤0.01% |
+360
| New | +$4.78K |
|
|
OPRA
8997
Opera Ltd
OPRA
$1.65B
| $4K | ﹤0.01% |
985
-197
| -17% | -$1.04K |
|
8998
PUT
Orion Group Holdings
ORN
$514M
| $4K | ﹤0.01% |
2,100
-6,600
| -76% | -$17K |
|
|
OTRK
8999
DELISTED
Ontrak
OTRK
| $4K | ﹤0.01% |
50
+43
| +614% | +$6.02K |
|
9000
PUT
Pampa Energía
PAM
$4.64B
| $4K | ﹤0.01% |
200
+100
| +100% | +$2.21K |
|
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.