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 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
351
PUT
Sarepta Therapeutics
SRPT
$1.67B
| $806K | 0.05% |
3,670
+3,104
| +548% | +$57.5K |
|
|
MBLY
352
CALL
DELISTED
Mobileye N.V.
MBLY
| $805K | 0.05% |
972
-57
| -6% | -$2.18K |
|
353
Quad
QUAD
$439M
| $803K | 0.05% |
34,484
-18,693
| -35% | -$317K |
|
354
PUT
Cisco
CSCO
$442B
| $802K | 0.05% |
3,520
+1,568
| +80% | +$44K |
|
|
RDS.A
355
CALL
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $802K | 0.05% |
2,578
+1,140
| +79% | +$58K |
|
356
CALL
Chipotle Mexican Grill
CMG
$41.3B
| $792K | 0.05% |
93,500
+18,250
| +24% | +$159K |
|
357
Ovintiv
OVV
$17B
| $792K | 0.05% |
20,350
+16,281
| +400% | +$596K |
|
358
PUT
JPMorgan Chase
JPM
$926B
| $789K | 0.05% |
7,209
+3,716
| +106% | +$232K |
|
|
SRCL
359
DELISTED
Stericycle Inc
SRCL
| $784K | 0.05% |
7,533
+5,292
| +236% | +$566K |
|
360
Acadia Pharmaceuticals
ACAD
$4.27B
| $781K | 0.05% |
24,090
+21,494
| +828% | +$719K |
|
361
abrdn Physical Gold Shares ETF
SGOL
$7.05B
| $780K | 0.05% |
60,520
-24,540
| -29% | -$301K |
|
362
Clorox
CLX
$11.6B
| $776K | 0.05% |
+5,612
| New | +$728K |
|
363
PUT
Halliburton
HAL
$27.6B
| $776K | 0.05% |
2,685
+1,027
| +62% | +$42.2K |
|
364
iShares MSCI Europe Financials ETF
EUFN
$3.9B
| $775K | 0.05% |
+49,431
| New | +$887K |
|
365
CALL
Medtronic
MDT
$105B
| $773K | 0.05% |
1,576
+751
| +91% | +$60.7K |
|
366
Kohl's
KSS
$2.16B
| $772K | 0.05% |
+20,384
| New | +$810K |
|
367
ProShares Ultra Energy
DIG
$69.9M
| $766K | 0.05% |
16,399
-667
| -4% | -$29.1K |
|
368
CALL
3M
MMM
$89.1B
| $766K | 0.05% |
1,356
-212
| -14% | -$29.9K |
|
369
FirstEnergy
FE
$28.5B
| $759K | 0.05% |
21,763
+2,397
| +12% | +$81.2K |
|
370
iShares MSCI USA Min Vol Factor ETF
USMV
$23.1B
| $758K | 0.05% |
16,417
+6,786
| +70% | +$301K |
|
371
CALL
CVS Health
CVS
$138B
| $757K | 0.05% |
2,297
-307
| -12% | -$30.6K |
|
372
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$22.3B
| $756K | 0.05% |
+19,384
| New | +$763K |
|
|
CTRA
373
DELISTED
Coterra Energy
CTRA
| $754K | 0.05% |
+29,313
| New | +$703K |
|
|
YHOO
374
PUT
DELISTED
Yahoo Inc
YHOO
| $750K | 0.05% |
3,843
+1,336
| +53% | +$49.3K |
|
|
SGI
375
Somnigroup International
SGI
$14.8B
| $749K | 0.05% |
54,204
+8,448
| +18% | +$125K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.