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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.5% |
| 2 | Communication Services | 0.5% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.3% |
| 5 | Consumer Discretionary | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2376
PUT
Canadian Natural Resources
CNQ
$96.9B
| $617K | ﹤0.01% |
468
+431
| +1,165% | +$5.92K |
|
2377
PUT
Generac Holdings
GNRC
$11.9B
| $617K | ﹤0.01% |
89
+27
| +44% | +$1.58K |
|
2378
Urban Outfitters
URBN
$5.99B
| $617K | ﹤0.01% |
+27,157
| New | +$736K |
|
2379
PUT
American States Water
AWR
$3.39B
| $616K | ﹤0.01% |
82
+29
| +55% | +$2.09K |
|
2380
Freeport-McMoran
FCX
$90B
| $616K | ﹤0.01% |
53,086
+12,977
| +32% | +$151K |
|
|
GMS
2381
DELISTED
GMS Inc
GMS
| $616K | ﹤0.01% |
28,011
+1,422
| +5% | +$25.5K |
|
2382
PUT
PTC Therapeutics
PTCT
$6.37B
| $616K | ﹤0.01% |
137
-289
| -68% | -$11.4K |
|
2383
CALL
Sinclair Inc
SBGI
$974M
| $616K | ﹤0.01% |
115
-69
| -38% | -$3.5K |
|
2384
Energizer
ENR
$1.44B
| $615K | ﹤0.01% |
15,928
+12,845
| +417% | +$575K |
|
2385
CALL
Medpace
MEDP
$16.8B
| $614K | ﹤0.01% |
94
-68
| -42% | -$3.92K |
|
2386
CALL
Helmerich & Payne
HP
$3.53B
| $612K | ﹤0.01% |
121
-378
| -76% | -$20.8K |
|
2387
CALL
Banco Macro
BMA
$5.7B
| $611K | ﹤0.01% |
84
+52
| +163% | +$2.69K |
|
2388
PUT
Howmet Aerospace
HWM
$116B
| $611K | ﹤0.01% |
309
-879
| -74% | -$14.8K |
|
2389
PUT
Xerox
XRX
$337M
| $609K | ﹤0.01% |
172
-94
| -35% | -$3.14K |
|
|
LL
2390
PUT
DELISTED
LL Flooring Holdings, Inc.
LL
| $608K | ﹤0.01% |
527
+94
| +22% | +$1.06K |
|
2391
CALL
Sonoco
SON
$5.76B
| $607K | ﹤0.01% |
93
+59
| +174% | +$3.73K |
|
2392
PUT
Sunoco
SUN
$14.2B
| $606K | ﹤0.01% |
194
-147
| -43% | -$4.51K |
|
|
ARRY
2393
DELISTED
Array Biopharma Inc
ARRY
| $605K | ﹤0.01% |
+13,080
| New | +$367K |
|
2394
CALL
Globus Medical
GMED
$10.4B
| $604K | ﹤0.01% |
143
-6
| -4% | -$261 |
|
2395
CALL
VICI Properties
VICI
$29.4B
| $603K | ﹤0.01% |
274
-406
| -60% | -$9.07K |
|
2396
CALL
Western Alliance Bancorporation
WAL
$9.07B
| $603K | ﹤0.01% |
135
-29
| -18% | -$1.29K |
|
|
BPL
2397
CALL
DELISTED
Buckeye Partners, L.P.
BPL
| $603K | ﹤0.01% |
147
-156
| -51% | -$5.89K |
|
2398
CALL
AngloGold Ashanti
AU
$40.3B
| $601K | ﹤0.01% |
338
-1,013
| -75% | -$13.6K |
|
2399
PUT
Red Rock Resorts
RRR
$3.74B
| $601K | ﹤0.01% |
280
+277
| +9,233% | +$6.73K |
|
2400
CALL
Raymond James Financial
RJF
$32.5B
| $600K | ﹤0.01% |
107
-99
| -48% | -$5.64K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,301 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,301 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.