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 | |
|---|---|---|---|---|---|---|
|
DRE
4876
CALL
DELISTED
Duke Realty Corp.
DRE
| $164K | ﹤0.01% |
3,000
-8,000
| -73% | -$438K |
|
4877
PUT
Chefs' Warehouse
CHEF
$4.71B
| $163K | ﹤0.01% |
4,200
+2,200
| +110% | +$77.3K |
|
4878
CALL
Invesco CurrencyShares British Pound Sterling Trust
FXB
$77.8M
| $163K | ﹤0.01% |
1,400
+1,200
| +600% | +$145K |
|
|
LADR
4879
CALL
Ladder Capital
LADR
$1.21B
| $163K | ﹤0.01% |
15,500
-3,000
| -16% | -$34K |
|
4880
CALL
NMI Holdings
NMIH
$3.37B
| $163K | ﹤0.01% |
9,800
-38,200
| -80% | -$694K |
|
4881
CALL
O-I Glass
OI
$1.1B
| $163K | ﹤0.01% |
11,700
-10,400
| -47% | -$150K |
|
4882
PUT
Trimble
TRMB
$13.2B
| $163K | ﹤0.01% |
2,800
+300
| +12% | +$19.7K |
|
4883
CALL
Tradeweb Markets
TW
$21.4B
| $163K | ﹤0.01% |
2,400
-5,500
| -70% | -$400K |
|
4884
PUT
Worthington Enterprises
WOR
$2.77B
| $163K | ﹤0.01% |
6,001
-21,897
| -78% | -$634K |
|
4885
W.R. Berkley
WRB
$26.9B
| $163K | ﹤0.01% |
3,596
-1,468
| -29% | -$66.7K |
|
|
IMGN
4886
PUT
DELISTED
Immunogen Inc
IMGN
| $163K | ﹤0.01% |
36,300
-45,200
| -55% | -$196K |
|
|
PLXP
4887
CALL
DELISTED
PLx Pharma Inc. Common Stock
PLXP
| $163K | ﹤0.01% |
67,300
+12,300
| +22% | +$34.2K |
|
|
ROI
4888
CALL
DELISTED
WISDOMTREE LARGECAP GROWTH FUND
ROI
| $163K | ﹤0.01% |
2,500
+2,200
| +733% | +$143K |
|
4889
CALL
IMAX
IMAX
$2.62B
| $162K | ﹤0.01% |
9,600
-5,400
| -36% | -$87.8K |
|
4890
PUT
iRhythm Holdings
IRTC
$3.85B
| $162K | ﹤0.01% |
1,500
-900
| -38% | -$119K |
|
4891
PUT
Lifetime Brands
LCUT
$191M
| $162K | ﹤0.01% |
+14,700
| New | +$174K |
|
4892
Roivant Sciences
ROIV
$24.5B
| $162K | ﹤0.01% |
39,954
+29,432
| +280% | +$117K |
|
4893
CALL
Zai Lab
ZLAB
$2.06B
| $162K | ﹤0.01% |
4,700
-4,400
| -48% | -$155K |
|
|
KLR
4894
CALL
DELISTED
Kaleyra, Inc.
KLR
| $162K | ﹤0.01% |
22,800
+971
| +4% | +$14.2K |
|
4895
AvePoint
AVPT
$2.76B
| $161K | ﹤0.01% |
37,216
+32,463
| +683% | +$165K |
|
4896
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$556M
| $161K | ﹤0.01% |
7,519
-7,657
| -50% | -$179K |
|
4897
PUT
Playtika
PLTK
$1.52B
| $161K | ﹤0.01% |
12,200
-214,800
| -95% | -$3.35M |
|
4898
Telus
TU
$14.9B
| $161K | ﹤0.01% |
+7,250
| New | +$179K |
|
|
WSR
4899
DELISTED
Whitestone REIT
WSR
| $161K | ﹤0.01% |
15,056
-13,959
| -48% | -$168K |
|
|
OBSV
4900
DELISTED
ObsEva SA Ordinary Shares
OBSV
| $161K | ﹤0.01% |
100,544
+39,247
| +64% | +$64.8K |
|
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.