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 | |
|---|---|---|---|---|---|---|
3351
Paycom
PAYC
$8.02B
| $535K | ﹤0.01% |
1,912
-3,541
| -65% | -$1.04M |
|
3352
CALL
Safe Bulkers
SB
$778M
| $535K | ﹤0.01% |
140,300
-22,200
| -14% | -$94.7K |
|
3353
PUT
Yelp
YELP
$1.53B
| $535K | ﹤0.01% |
19,300
-26,000
| -57% | -$807K |
|
|
MDVL
3354
CALL
DELISTED
MedAvail Holdings, Inc. Common Stock
MDVL
| $535K | ﹤0.01% |
+7,006
| New | +$615K |
|
3355
CALL
Duolingo
DUOL
$6.55B
| $534K | ﹤0.01% |
6,100
-3,100
| -34% | -$274K |
|
|
OTLY
3356
Oatly Group
OTLY
$476M
| $534K | ﹤0.01% |
7,723
+5,285
| +217% | +$412K |
|
3357
PUT
Papa John's
PZZA
$995M
| $534K | ﹤0.01% |
6,400
+3,100
| +94% | +$279K |
|
3358
Alliant Energy
LNT
$18.8B
| $533K | ﹤0.01% |
+9,100
| New | +$549K |
|
3359
Viant Technology
DSP
$227M
| $532K | ﹤0.01% |
104,915
+56,193
| +115% | +$337K |
|
3360
CALL
OGE Energy
OGE
$9.97B
| $532K | ﹤0.01% |
13,800
+6,400
| +86% | +$254K |
|
|
VSXY
3361
PUT
Victoria's Secret
VSXY
$7.01B
| $531K | ﹤0.01% |
19,000
-3,000
| -14% | -$130K |
|
3362
CALL
Webster Financial
WBS
$12.3B
| $531K | ﹤0.01% |
12,600
-5,700
| -31% | -$275K |
|
3363
CALL
Cactus
WHD
$3.61B
| $531K | ﹤0.01% |
13,200
+11,200
| +560% | +$563K |
|
|
RBAC
3364
CALL
DELISTED
RedBall Acquisition Corp.
RBAC
| $531K | ﹤0.01% |
53,400
-309,800
| -85% | -$3.07M |
|
3365
Lantheus
LNTH
$6.48B
| $529K | ﹤0.01% |
8,015
-4,643
| -37% | -$293K |
|
3366
PUT
Global X MSCI Norway ETF
NORW
$85.6M
| $529K | ﹤0.01% |
35,000
-44,000
| -56% | -$1.29M |
|
|
NGM
3367
CALL
DELISTED
NGM Biopharmaceuticals, Inc. Common Stock
NGM
| $528K | ﹤0.01% |
41,200
+38,700
| +1,548% | +$536K |
|
3368
PUT
Grand Canyon Education
LOPE
$4.15B
| $527K | ﹤0.01% |
5,600
+2,800
| +100% | +$261K |
|
3369
CALL
Nkarta
NKTX
$154M
| $527K | ﹤0.01% |
42,800
+40,700
| +1,938% | +$534K |
|
|
ENLC
3370
CALL
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $527K | ﹤0.01% |
62,000
-40,600
| -40% | -$408K |
|
|
ISEE
3371
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $527K | ﹤0.01% |
54,838
-12,656
| -19% | -$159K |
|
3372
PUT
Vanguard Total Bond Market
BND
$158B
| $526K | ﹤0.01% |
7,000
-2,900
| -29% | -$221K |
|
3373
CALL
Constellation Energy
CEG
$91.6B
| $526K | ﹤0.01% |
9,200
+4,700
| +104% | +$283K |
|
|
CHX
3374
PUT
DELISTED
ChampionX
CHX
| $526K | ﹤0.01% |
26,500
-27,500
| -51% | -$621K |
|
3375
CALL
First Bancorp
FBNC
$2.63B
| $526K | ﹤0.01% |
+15,100
| New | +$564K |
|
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.