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 |
Alibaba
BABA
|
+$50.3M |
| 2 |
Boeing
BA
|
+$24.3M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 4 |
Biogen
BIIB
|
+$15.9M |
| 5 |
FedEx
FDX
|
+$15.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$60.3M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Netflix
NFLX
|
+$19M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$17.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.49% |
| 2 | Technology | 0.48% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.35% |
| 5 | Communication Services | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ACB
1326
CALL
Aurora Cannabis
ACB
$165M
| $2.03M | 0.01% |
39
-7
| -15% | -$5.19K |
|
1327
PUT
Medifast
MED
$108M
| $2.03M | 0.01% |
196
-30
| -13% | -$3.22K |
|
1328
PUT
AGNC Investment
AGNC
$12.3B
| $2.03M | 0.01% |
1,262
-222
| -15% | -$3.64K |
|
|
BBL
1329
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $2.03M | 0.01% |
+47,293
| New | +$2.16M |
|
1330
CALL
Vale
VALE
$62.9B
| $2.02M | 0.01% |
1,759
-2,731
| -61% | -$33.1K |
|
|
ZGNX
1331
CALL
DELISTED
Zogenix, Inc.
ZGNX
| $2.02M | 0.01% |
504
-661
| -57% | -$30.5K |
|
1332
Fair Isaac
FICO
$28.7B
| $2.02M | 0.01% |
6,640
-3,850
| -37% | -$1.3M |
|
|
EGRX
1333
CALL
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
| $2.01M | 0.01% |
356
-164
| -32% | -$9.22K |
|
1334
PUT
Guardant Health
GH
$19.5B
| $2.01M | 0.01% |
315
-64
| -17% | -$5.64K |
|
1335
PUT
Pan American Silver
PAAS
$18.6B
| $2.01M | 0.01% |
1,282
+646
| +102% | +$10.5K |
|
|
SAGE
1336
CALL
DELISTED
Sage Therapeutics
SAGE
| $2.01M | 0.01% |
143
-27
| -16% | -$4.52K |
|
1337
CALL
InterDigital
IDCC
$6.68B
| $2M | 0.01% |
382
+26
| +7% | +$1.47K |
|
1338
CALL
Old National Bancorp
ONB
$10.1B
| $2M | 0.01% |
1,162
+244
| +27% | +$4.17K |
|
|
GRMN
1339
CALL
Garmin
GRMN
$46.9B
| $2M | 0.01% |
236
-301
| -56% | -$24.3K |
|
1340
CALL
Ionis Pharmaceuticals
IONS
$9.35B
| $2M | 0.01% |
333
+55
| +20% | +$3.58K |
|
1341
PUT
Huazhu Hotels Group
HTHT
$12.4B
| $1.99M | 0.01% |
604
+576
| +2,057% | +$19.4K |
|
1342
CALL
Bunge Global
BG
$23.6B
| $1.99M | 0.01% |
352
+23
| +7% | +$1.28K |
|
1343
CALL
Levi Strauss
LEVI
$9.44B
| $1.99M | 0.01% |
1,047
+235
| +29% | +$4.36K |
|
1344
CALL
RBC Bearings
RBC
$18.8B
| $1.99M | 0.01% |
+120
| New | +$19.4K |
|
1345
Tyson Foods
TSN
$20.2B
| $1.98M | 0.01% |
23,042
+1,753
| +8% | +$149K |
|
|
SVC
1346
CALL
Service Properties Trust
SVC
$1.1B
| $1.98M | 0.01% |
154
+97
| +170% | +$12K |
|
1347
Hasbro
HAS
$12.6B
| $1.98M | 0.01% |
16,690
-6,846
| -29% | -$780K |
|
|
PPL
1348
PPL Corp
PPL
$27.3B
| $1.98M | 0.01% |
+62,806
| New | +$1.9M |
|
|
PFPT
1349
PUT
DELISTED
Proofpoint, Inc.
PFPT
| $1.97M | 0.01% |
153
-44
| -22% | -$5.38K |
|
1350
PUT
TJX Companies
TJX
$170B
| $1.97M | 0.01% |
354
-204
| -37% | -$11.1K |
|
Similar funds
Simplex Trading's Q3 2019 Portfolio in Review
As of Q3 2019, Simplex Trading held 8,410 positions worth $35.2B, down 4.1% from $36.6B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q3 2019 filing shows 1,312 new, 3,129 increased, 2,596 reduced and 1,163 closed positions. Its largest new stake was SPDR Gold Trust: 131,281 shares worth $18.2M. The largest sale was Alphabet (Google) Class C, an estimated $60.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.49% of assets, up from 0.26% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2019 buy was SPDR Gold Trust: 131,281 shares worth $18.2M.
- Simplex Trading added most to Alibaba in Q3 2019, an estimated $50.3M increase.
- Simplex Trading's biggest Q3 2019 reduction was Alphabet (Google) Class C, cutting an estimated $60.3M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q3 2019, selling an estimated $36.4M.
- Simplex Trading's ten largest holdings make up 33% of its $35.2B portfolio in Q3 2019.
- Simplex Trading opened 1,312 new positions and closed 1,163 in Q3 2019.
- Simplex Trading's portfolio value fell 4.1% quarter-over-quarter to $35.2B.
Based on Simplex Trading's 13F filing for Q3 2019, filed 15 Oct 2019.